DE102015215541A1 - Method for adapting at least one printed image and / or at least one cylinder elevator to a change of substrate in a printing machine - Google Patents

Abstract

The invention relates to a method for adapting at least one printed image and / or at least one cylinder elevator to a substrate change in a printing machine, wherein at least one cylinder elevator or the respective cylinder elevator with at least two arranged in a cylinder channel of a printing forme cylinder of the printing press clamping elements on the lateral surface of the respective printing forme cylinder is tensioned, wherein by means of a movement of the at least two clamping elements in the axial direction and in the circumferential direction of the relevant printing forme cylinder within the respective cylinder elevator each tensile stress is built up and the dimension of the cylinder elevator is changed, wherein the at least two clamping elements for adjusting and stretching of the respective cylinder elevator to the Substrate change in the circumferential direction of the relevant printing forme cylinder by means of at least one electric motor and the at least two clamping elements in the axial direction of the relevant n printing forme cylinder are displaced relative to each other by means of at least one other electric motor, wherein the at least two displaceable clamping elements are remotely adjusted for adapting the relevant cylinder elevator to the substrate change.

Description

The invention relates to a method for adapting at least one printed image and / or at least one cylinder elevator to a change of substrate in a printing press according to the features of claim 1.

If, in the area of the processing of sheet-shaped substrate, for example when printing sheet-like printing material, ie a printing sheet, this substrate is processed successively by several processing stages, the printing material is printed successively, for example, by a plurality of printing units and / or coating units. In this case, for example, by a rolling out of the substrate in cylinder gaps and / or by a swelling of the substrate by liquids, such as constituents of printing inks and / or dampening solution to a deformation of the substrate. This may result in a deviation between the layers related to the substrate, at which the individual processing steps act on the substrate. In the case of, for example, multicolor and / or multi-page printing, register errors and / or registration errors can result. An exact match of a print image on front and back of a double-sided substrate is called register ( DIN 16500-2 ). Multi-color printing is called the Passer (DIN 16500-2), when individual print images of different colors are combined exactly to a picture. The equivalent of the register also uses the expression of the color register.

When printing on an exemplary sheet-fed press, coating material, for example printing ink, is transferred from a forme cylinder to a transfer cylinder and from the transfer cylinder to a printing material held by an impression cylinder. The geometric dimensions of the printed sheet change as a result of the printing ink and / or dampening solution and the pressure in the printing gap. The printing sheet is, for example, based on a transport direction of the printing substrate and / or a circumferential direction of the impression cylinder longer and / or initially at its trailing end in a transverse to the transport direction of the substrate oriented transverse direction and / or an axial direction of the impression cylinder wider. If the printing press consists of several printing units, this is done more or less pronounced, for example, in each printing unit, so that a printed image printed by subsequent printing units in the circumferential direction deforms, in particular shorter and / or appears narrower compared to the previously printed images. This effect can be designed differently for each of the printing units, for example, which results in a high probability of register errors and / or register errors.

In the DE 10 2012 207 103 A1 A solution to compensate for the longitudinal expansion of the substrate is presented. Here, the tension of the clamped pressure plate is increased and thus stretched in the longitudinal direction.

By the DE 10 2012 207 111 B3 a method for arranging a printing forme on a plate cylinder is known, wherein the plate cylinder has at least one channel in which at least one front clamping device and at least one rear clamping device are arranged, wherein the rear clamping device is part of at least one carriage, by means of at least one tensioning drive within the at least one channel along a clamping path to the at least one front clamping device is arranged to be movable, wherein in a first clamping step, at least one, mounted in a fixed relative to the cylindrical ball bearings, rear stop actuator is moved relative to the cylindrical bale in a Anschlagagsolllage and wherein then at least one carriage by means of the at least one tensioning drive together with the clamped in the at least one rear clamping device rear end of the printing forme on the at least one front clamping device and the first channel wall to move t is until at least one stopper body touches the at least one rear stopper actuator and then wherein a fixing device is clamped and holds the at least one carriage in its position.

From the DE 10 2008 023 728 A1 is known a solution in which the pressure plate end grasping clamping rail is divided into clamping segments. To compensate for the stretching of the printing material in the axial direction of the plate cylinder, the clamping segments are displaced to the outside.

From the DE 10 2007 057 455 A1 a cylinder lift manipulation device is known, which allows an automatic correction of geometry deviations in the printed image. This is done by using an image inspection device for the geometric measurement of printed substrates, which is connected to the machine control of the printing press. The printing press has a computer which processes the measurement results of the image inspection device and is able to perform a setpoint / actual value comparison. If deviations are detected, actuators are activated so that the deviations detected can be minimized. In this case, a plurality of actuators are arranged on the cylinder, so that the cylinder elevator over the entire print image can be selectively deformed. These actuators are partially driven electrically and can having rotatively operating electric motors. Actuators are also proposed which have piezoelectric drives, electromagnetic lifting drives or electric linear motors. There are also mentioned actuators that work at least partially pneumatically.

By the DE 42 35 393 A1 a method for register adjustment on sheet-fed presses is known, in particular for circumferential, lateral, narrow pressure, Breiterdruck- and / or diagonal register adjustment, wherein the respective register is optically detected by machine on the substrate and the detection result for automatic automatic register adjustment is used. In this case, to determine which are on the print result affecting substrate influences (for example, sheet elongation, rolling the sheet across the print, narrow and wide printing) preferably distributed over the base of the arc arranged brands optically detected and evaluated their positions, the brands z. B. are arranged in corner regions of the corresponding arc.

By the EP 1 644 192 B1 a method for influencing the fan-out effect by means of a device for influencing the fan-out effect and influencing the side register by means of a side register control / -regelung known, wherein initially evaluated to influence the fan-out effect, the image of a sensor is, which detects the print image on a scan width of at least a quarter of a web width, and a deviation from a setpoint input an actuator to influence the fan-out effect, a control command is transmitted to determine the fan-out pixels of two print image sections of a color separation of a particular Color with respect to its axial position with a reference position, in particular with a reference relative position, for the pixels of the two printed image sections are compared, being used as a reference position, the location of defined pixels or image areas of the color separation of this color from image data of the prepress, and wherein r correction of the fan-out effect and correction of the side register is based on measured values of the same sensor.

By the EP 0 812 683 A1 is a sheet-fed press known in the form cylinder own individual drives, which are mechanically decoupled from a main drive. Its speed is tracked, for example, a speed of a main drive of the sheet-fed press.

By means of such individual drives, it is possible errors in the register and / or register, which are based on changes in length of the substrate to reduce or prevent by a difference between a peripheral speed of the cylinder elevator to a peripheral speed of the substrate is made selectively and thus, for example, extends a print image targeted or shortened transmission. For this purpose, for example, a speed ratio between a forme cylinder and an associated impression cylinder is varied, for example cyclically.

In the following, an example is shown in which in the relevant printing unit form cylinder and counter-pressure cylinder have substantially the same circumference. At circumferential lengths of the impression cylinder, which represent a multiple of the circumferential length of the forme cylinder, the angular velocity of the forme cylinder is correspondingly substantially larger by a corresponding integer factor than the angular velocity of the corresponding impression cylinder. For example, an angular velocity of a forme cylinder is reduced from an angular velocity of a transfer cylinder or at least a counter-pressure cylinder as long as a cylinder lift of the forme cylinder is in contact with the transfer cylinder and / or as long as the transfer cylinder is in contact with the substrate. As a result, a printed image is shown elongated on the substrate, for example, to counteract an elongation of the already applied to the substrate printed image by preceding cylinder column. Thereafter, the angular velocity of this forme cylinder relative to the angular velocity of the transfer cylinder or at least the impression cylinder is preferably increased for compensation, as long as the cylinder lift of this forme cylinder due to a cylinder channel of the forme cylinder and / or a cylinder channel of the transfer cylinder is not in contact with the transfer cylinder and / or as long the transfer cylinder is not in contact with the substrate due to the cylinder channel of the transfer cylinder and / or the position or shape of the impression cylinder. After a complete revolution, the relative angular position of the two cylinders is preferably identical again. As a result, in particular unintentional errors with respect to the printing lengths of the printed images of the individual printing inks can be compensated for in a targeted manner.

For example, in the case of forming cylinders having a circumference of a multiple of a section length of the substrate, one complete revolution of the forme cylinder may result in a multiple cycle of increased and reduced angular velocities, and thus a multiple capture of the original relative angular position.

When changing a speed ratio between two adjacent cylinders, for example, between a forme cylinder on the one hand and a transfer cylinder On the other hand, or a transfer cylinder on the one hand and a counter-pressure cylinder on the other hand, it is necessary in any case that two directly adjacent cylinders rotate at times with different angular velocities and different peripheral speeds. Such adjacent cylinders usually have defined rolling surfaces, each rolling on each other and by a constant position of the axes of rotation of these cylinders is ensured to each other, especially in those situations in which a channel of one of these cylinders opposite to a lateral surface or a channel of another of these cylinders , As a result, vibrations are to be prevented by sudden force changes that would occur without these rolling surfaces at the beginning and at the end of a channel. Usually so-called bearer rings are used as these rolling surfaces. With changes in the speed ratio and thus mutually variable peripheral speeds, however, no more pure unwinding, but also a sliding contact between these rolling surfaces.

The invention has for its object to provide a method for adjusting at least one printed image and / or at least one cylinder elevator to a substrate change in a printing press.

The object is achieved by the features of claim 1.

An advantage achievable with the invention is that several cylinder elevators are adjusted relative to one another, in particular if at least one of the cylinder elevators can not be compressed in the circumferential direction of the printing form cylinder carrying it.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

1 a schematic representation of several printing units of a sheet-fed press;

2 a schematic representation of a section through a forme cylinder with a arranged in a channel clamping device;

3 a schematic representation of a plan view of a channel of a forme cylinder with a arranged in the channel clamping device;

4 a schematic representation of a section through a channel of a forme cylinder with another arranged in the channel clamping device;

5 a schematic representation of a section through a channel of a forme cylinder with another arranged in the channel clamping device;

6 a print sheet having a print image formed thereon or at least to be formed;

7 a tensioning device disposed in the channel at a position;

8th a partial section of forcibly guided by a guide rail tensioning device;

9 in the sub-figures a and b is an illustration of the forces involved in a self-locking of the tensioning device;

10 a partial section of the forme cylinder with the arranged in the channel self-locking jig;

11 a simplified block diagram for the generation of correction values.

A processing machine for a sheet-shaped substrate, in particular a sheet processing machine, preferably has a substrate feeder, for example, a sheet feeder, and / or preferably a feeder, for example, called a sheet feeder, and / or preferably a substrate feeder, for example, a sheet feeder. The processing machine preferably has at least one processing stage, also referred to as a work, and more preferably several processing stages, also referred to as works. For example, the at least one movement is arranged between the substrate supply device and the substrate delivery device. Preferably, this is at least one work as a printing unit 01 ; 02 ; 03 , Varnishing, drying, calendering or film transfer plant or formed in any other suitable manner.

In the following, an example designed as a printing machine sheet processing machine, in particular sheet-fed printing machine will be described. However, the invention is transferable to other sheet processing machines, the more each with at least one cylinder elevator 08 equipped and / or equipped cylinder 07 , preferably forme cylinder 07 , in particular printing forme cylinder 07 exhibit. In the case of, for example, designed as plates, in particular printing plates cylinder lifts 08 are such form cylinder 07 preferably as a plate cylinder 07 educated. At least one of the works is preferred as a printing unit 01 ; 02 ; 03 , in particular offset printing unit 01 . 02 . 03 educated. Alternatively or additionally, at least one coating unit or several coating units can be arranged downstream. In the case of several printing units 01 ; 02 ; 03 can also be provided the arrangement of one or more coating units between the printing units. The cylinder lift 08 is for example a printing plate 08 or a paint board 08 or a varnish cloth 08 , The cylinder lift 08 may also have the shape of a sleeve, so be closed in the circumferential direction B.

The in the 1 Sheet processing machine illustrated by way of example, in particular sheet-fed printing machine, preferably has a plurality of works, in particular printing units, arranged in particular in series 01 ; 02 ; 03 on. Each of these works, especially printed works 01 ; 02 ; 03 preferably has at least one substrate-carrying cylinder 04 on, preferably as druckstofstoffführender cylinder 04 , in particular as a sheet-guiding cylinder 04 and / or as an impression cylinder 04 is trained. Each of these works, especially printed works 01 ; 02 ; 03 more preferably also has at least one sheet transport device 05 on, preferably as a transfer drum 05 and more preferably as a transfer drum 05 is trained. Alternatively or additionally, the at least one sheet transport device 05 designed as a transport cylinder and / or as a swing gripper. Preferably, the at least one sheet transport device 05 at least one sheet-holding element and more preferably a plurality of sheet-holding elements. The at least one sheet-holding element is preferably designed as at least one gripper and / or at least one sucker. Preferably, each of the impression cylinders 04 in each case at least one and preferably exactly one z. B. as a transfer cylinder 06 trained cylinder 06 assigned, for example, as a blanket cylinder 06 is trained. Preferably, each factory has at least one and more preferably exactly one as a forme cylinder 07 trained cylinder 07 on. Preferably, the at least one forme cylinder 07 as a plate cylinder 07 , in particular as a plate cylinder 07 educated. The form cylinder 07 is particularly preferred during a printing operation with the transfer cylinder 06 in contact. But there are also other methods conceivable in which the forme cylinder 07 For example, comes directly into contact with the substrate, for example in a flexographic printing process and / or in an embossing process and / or in a perforation and / or in a stamping process and / or in a corresponding Lackierverfahren.

At least one inking unit is preferred 09 provided, which serves in particular to at least one on the forme cylinder 07 arranged cylinder lift 08 to color. The at least one inking unit 09 preferably has at least one and more preferably a plurality of inking unit rollers 11 and at least one and preferably more with the respective cylinder elevator 08 in contact and / or bringable inking rollers 10 on. For example, the form cylinder 07 a dampening unit 12 assigned, which preferably at least one dampening roller 13 has, for example, several dampening rollers 13 ,

For example, the at least one cylinder lift 08 as a printing plate 08 designed, in particular as a printing plate 08 , In particular, the at least one cylinder lift 08 on the form cylinder 07 order and / or fix, has the form cylinder 07 preferably at least one cylinder recess 14 on, for example, as a cylinder channel 14 is formed and / or as a tensioning channel 14 referred to as. Within this is preferably at least one cylinder recess 14 at least one fastening device 15 arranged. The at least one fastening device 15 is for example as a holding device and / or as a clamping device 15 educated. The at least one fastening device 15 preferably serves at least one holding of the at least one cylinder elevator 08 on the lateral surface of the relevant forme cylinder 07 , In particular, if the at least one fastening device 15 at least as a clamping device 15 is formed, this preferably serves at least also a tensioning of the at least one cylinder elevator 08 on the relevant forme cylinder 07 ,

Preferably, the at least one fastening device 15 at least one front attachment means 16 on. The at least one front attachment means 16 serves preferably a fastening of a leading at least in a printing operation end 17 of the cylinder elevator 08 , For example, this is at least a front attachment means 16 as at least a front clamping means 16 educated. Preferably, the at least one fastening device 15 at least one rear attachment means 18 on. The at least one rear attachment means 18 serves preferably a fastening of an at least trailing end in printing operation 19 of the cylinder elevator 08 , For example, this is at least a rear attachment means 18 as at least a rear clamping means 18 educated. At least one movable tensioning element is preferred 20 further preferably at least in common with the at least one rear attachment means 18 is arranged movable together. The at least one rear attachment means 18 is even more preferred at the same time as at least one movable clamping element 20 educated.

A transverse direction A is preferably oriented transversely to a transport direction of the substrate, in particular horizontal direction A. The transverse direction A is preferably parallel to one, for example, by a rotation axis 47 of the form cylinder 07 fixed axial direction A. In particular for tensioning the relevant cylinder elevator 08 in the circumferential direction B of the forme cylinder 07 this is at least one tensioning element 20 preferably arranged orthogonal to the axial direction A movable and / or displaceable. Preferably, a plurality of clamping elements are related to the axial direction A. 20 arranged one after another in a row. More preferably, the at least one clamping device 15 a plurality, in particular at least two and more preferably at least three clamping elements 20 on, which are preferably arranged in relation to the axial direction A successively arranged. Preferably, these serve several clamping elements 20 a tensioning of a common cylinder lift 08 , This is preferably at least one tensioning element 20 movably arranged in and / or against the axial direction A, in particular relative to a bale 46 of the form cylinder 07 and / or each other. In the arrangement of the clamping elements 20 in the axial direction are used to stretch the cylinder lift 08 For example, only the two outer clamping elements 20 moved in the axial direction. In one embodiment, a center tensioning element is referred to the axial direction A. 20 with respect to the axial direction A relative to the bale 46 of the forme cylinder 07 fixedly arranged.

With the fastening device 15 can use different cylinder lifts 08 on the form cylinder 07 be arranged, for example manually and / or at least partially or preferably fully automated, for example, controlled by a control computer control, in particular controlled by a machine control and / or regulated and in particular by means of at least one drive. For example, to execute a z. B. from a production planning system to the printing press directed job is or is the designated cylinder lift 08 , in particular a pressure plate 08 , for example in an elevator storage 21 provided on the printing press and, for example, via a feed path to the forme cylinder 07 preferably supplied automatically or at least fed. The elevator storage 21 is for example as a disk cartridge 21 or as a printing forme magazine of a respective printing unit 01 ; 02 ; 03 educated. The feed path is designed, for example, as a feed chute. Preferably, the at least in the printing operation leading end is preferred 17 of the cylinder elevator 08 into the cylinder recess 14 of the relevant forme cylinder 07 introduced and in particular by means of at least one front fastening means 16 attached, in particular clamped. Then the cylinder lift 08 on a lateral surface of the bale 46 of the forme cylinder 07 put on, for example by the form cylinder 07 a rotational movement about its axis of rotation 47 takes place. The at least trailing in printing operation end 19 of the cylinder elevator 08 is attached to the at least one rear attachment means 18 and / or on the at least one tensioning element 20 attached, for example, clamped. Depending on the ratio of the length of the cylinder elevator 08 in the circumferential direction B to the circumference of the forme cylinder 07 become the leading end in printing operation 17 and the trailing end in printing operation 19 of the cylinder elevator 08 from a front attachment 16 and a rear attachment means 18 held in a same or different cylinder recesses 14 are arranged.

In the case of a printing press, it is preferred to apply one to the forme cylinder 07 clamped cylinder lift 08 dyed with paint and / or varnish. One on the cylinder lift 08 arising and to be transferred print image 32 is directly or preferably indirectly by means of the transfer cylinder 06 on the of the impression cylinder 04 guided substrate, z. B. a sheet 31 transfer. Preferably, a register measurement is performed. If a registration measurement is mentioned in the preceding and / or following, then this is understood in particular to mean a measurement of a register and / or a measurement of a register or color register. That on the cylinder lift 08 resulting and transferred print image 32 and / or a printed image applied to the substrate 32 and / or the respective cylinder lift 08 itself is / are preferably adapted to the changes in the substrate resulting from the current printing process. This is preferably done both with respect to the axial direction A or transverse direction A and with respect to the circumferential direction B of the respective cylinder 07 , in particular forme cylinder 07 ,

A change in the dimension of the substrate in its transport direction and / or parallel to the circumferential direction B is preferred by a change in the dimension and in particular an elongation of at least one corresponding cylinder elevator 08 in the circumferential direction B and / or by a controlled and / or controlled rotational movement of the forme cylinder 07 compensated, wherein a course of an angular position of the respective printing forme cylinder 07 relative to an angular position of a printing material-carrying cylinder 04 ; 06 controlled or regulated. For example, the adaptation to the change in substrate due to the change in the dimension of the cylinder elevator 08 in the circumferential direction greater than due to the drive of the plate cylinder 07 , The at least one rear attachment means 18 , preferably as at least one tensioning element 20 is formed, preferably each has at least one, for example as outer terminal block 23 formed outer clamping element 23 and at least one, for example, as an inner terminal block 24 trained inner clamping element 24 on. Preferably, the serve at least one inner clamping element 24 and the at least one outer clamping element 23 an attachment of at least trailing end in printing operation 19 of the relevant cylinder elevator 08 ,

At least one support element is preferred 25 ; 28 arranged, by means of which the at least one clamping element 20 in the circumferential direction B with respect to the bale 46 of the form cylinder 07 and / or in particular with respect to a channel wall 29 of the cylinder channel 14 supported and / or at least supportable. The at least one support element 25 ; 28 is for example as at least one clamping spindle 25 and / or as at least one with respect to its volume variable hollow body 28 , For example, as at least one pneumatic support element 28 , in particular as at least one tension hose 28 educated. The at least one support element 25 ; 28 For example, it is manually and / or at least partially or preferably fully automated, for example controlled and / or regulated by a controller implemented in the control computer, in particular by the machine control, and in particular actuated by at least one drive.

Each as a clamping spindle 25 trained support elements 25 preferably have at least one thread that with a thread of a respective clamping element 20 and / or with a relative to the bale 46 the form cylinder stationary thread cooperates. By the thread is preferably a rotational movement about an axis of the clamping spindle 25 in a directed in particular with at least one component in the circumferential direction B or opposite directed movement of the corresponding clamping element 20 relative to the bale 46 of the forme cylinder 07 transformed. This allows the cylinder lift 08 tensioned and / or stretched and / or relaxed in relation to the circumferential direction B.

As in each case with respect to its volume variable hollow body 28 trained support elements 28 are preferably in the circumferential direction B relative between a channel wall 29 and the at least one tensioning element 20 arranged. By enlarging one inside the corresponding hollow body 28 arranged amount of a medium, in particular a fluid, for example air, preferably expands the hollow body 28 in particular in the circumferential direction B and thereby moves the at least one clamping element 20 at least with a component counter to this circumferential direction B, in particular of the hollow body 28 next canal wall 29 away and onto one of the hollow body 28 further away channel wall. A reduction in the interior of the hollow body 28 arranged amount of the fluid causes in conjunction with a by the tension of the cylinder elevator 08 and / or, for example, by a spring element caused restoring force an opposite movement. This allows the relevant cylinder lift 08 tensioned and / or relaxed in relation to the circumferential direction B. Preferred is as variable with respect to its volume hollow body 28 at least one tension hose 28 or short hose 28 arranged. It is preferred for displacing the at least one tensioning element 20 in the circumferential direction B of the forme cylinder 07 an internal pressure of the at least one preferably as a hose 28 trained hollow body 28 can be raised, in particular selectively increased. For this purpose, preferably at least one preferably fernbetätigbares adjusting agent, for. B. a valve, in particular a controllable or controllable valve, in particular a proportional valve and / or at least one pressure reducer provided by means of which an internal pressure in the variable in its volume hollow body 28 is specifically adjustable. Alternatively or additionally, for example, it is provided that the at least one preferably as a hose 28 trained hollow body 28 gradually with partial volume of the fluid provided for filling, in particular air, is filled. The partial volumes are preferably predetermined by a specification with respect to the volume and / or a specification with respect to an opening time of a valve or the like. For example, such a stepwise filling is carried out iteratively with repeated detection of the internal pressure and / or the position of the at least one tensioning element 20 relative to the bale 46 of the forme cylinder 07 and / or repeated image inspection and / or repeated register measurement until a desired value and / or state is reached. The partial volumes are preferably such that preferably as a hose 28 trained hollow body 28 fed to one at the inner of this hollow body 28 adjoining valve bears a pressure which is at least as high as and preferably higher than that for the interior of the hollow body 28 provided internal pressure, and that by targeted opening of this valve fluid into the interior of the cavity 28 flows. In an alternative embodiment, this is for displacing the at least one tensioning element 20 in the circumferential direction B of the forme cylinder 07 provided adjusting means designed as a preferably electrically operated motor.

For example, both are at least one clamping spindle 25 trained support element 25 as well as at least one with respect to its volume variable hollow body 28 trained support element 28 arranged. For example, exclusively at least one tension hose 28 arranged.

The tensioning of the cylinder lift 08 in the circumferential direction B is preferably the attachment of the cylinder lift 08 on the form cylinder 07 , The tensioning of the cylinder lift 08 in the circumferential direction B is preferably at least also a change in the dimension of the cylinder elevator 08 in the circumferential direction B, for example to compensate for changes in the substrate during its processing, in particular during the processing of a pending on the printing press print job.

Alternatively or in addition to the particular remotely adjustable stretching of the cylinder elevator 08 in the circumferential direction B of the forme cylinder 07 suitable means are preferably also means for in particular remotely adjustable stretching of the cylinder elevator 08 arranged in the axial direction A.

A change in the dimension of the substrate in the transverse direction A and thus parallel to the axial direction A is preferred by a change in the dimension and in particular an elongation of at least one corresponding cylinder lift 08 compensated in the axial direction A. Preferably, the tensioning device 15 at least one relocation tool 27 ; 34 for changing the position of at least one of the clamping elements 20 with respect to the axial direction A and / or for stretching at least one cylinder elevator 08 with respect to the axial direction A. This is at least one tensioning element 20 by means of this at least one displacement means 27 ; 34 in and / or against the axial direction A against at least one further clamping element 20 and / or against to the bale 46 of the forme cylinder 07 stationary component, for example against the bale 46 of the forme cylinder 07 self-supported and / or supportable. In particular, displacement agents are preferred 27 provided, each between two clamping elements 20 or between a related to the axial direction A boundary of the cylinder channel 14 and the respective outer clamping elements 20 are arranged. The at least one means of displacement 27 ; 34 For example, it is manually and / or at least partially or preferably fully automated, for example controlled and / or regulated by a controller implemented in the control computer, in particular by the machine control, and in particular actuated by at least one drive.

In a first embodiment of the at least one displacement means 27 is the respective at least one displacement means 27 for example, with at least two clamping elements 20 in connection. The at least one means of displacement 27 is then, for example, as at least one displacement spindle 27 and / or as at least one with respect to its volume variable hollow body 27 , in particular as at least one displacement tube 27 and / or as at least one electric drive, for. B. engine formed.

In a second embodiment of the at least one displacement means 34 is the respective at least one displacement means 34 For example, only with a clamping element 20 one hand and one to the bale 46 of the forme cylinder 07 stationary component, such as the bale 46 of the forme cylinder 07 yourself in connection. This is preferably at least one displacement means 34 designed such that there are different sized distances for the displacement of the same respective clamping element 20 allows and / or that there are different distances for the displacement of different clamping elements 20 allows. In the following, two examples of this second embodiment will be described.

In a first example of the second embodiment of the at least one displacement means 34 is preferably an axial displacement of the at least one clamping element 20 by means of an extension of at least one first force transmission element relative to the axial direction A. 36 or shortly first force transmitter 36 causes. Preference is given to in the cylinder recess 14 the at least one tensioning element 20 and preferably the plurality of clamping elements 20 arranged, in particular in the axial direction A related successively in a row. At least two and more preferably at least three clamping elements are preferred 20 arranged in such a succession. This preferably has at least one tensioning element 20 at least one outer clamping element 23 and at least one inner clamping element 24 on. More preferably, each of the at least two clamping elements 20 in each case at least one outer clamping element 23 and in each case at least one inner clamping element 24 on. In a starting position, the plurality of clamping elements 20 For example, arranged such that their inner clamping elements 24 in the axial direction A are aligned and / or that their outer clamping elements 23 are aligned in the axial direction A. In particular, by different displacement of the individual clamping elements 20 with regard to the circumferential direction B, however, this state can be canceled.

Preferably, an attachment of at least trailing end in printing operation takes place 19 at the respective clamping element 20 by clamping the trailing at least in printing operation end 19 between the respective inner clamping element 24 and the respective outer clamping element 23 ,

The actuation of the respective on the at least one clamping element 20 acting adjusting means for the displacement of the respective clamping element 20 in the circumferential direction B of the forme cylinder 07 and / or in its axial direction A is preferably carried out from outside of the forme cylinder 07 , in particular contactless, z. B. magnetic.

This preferably has at least one displacement means 34 at least a first force-generating element 35 or a first force generator 35 on. This preferably has at least one displacement means 34 at least a first force transmission element 36 on. The at least one force-generating element 35 is preferably activated and also deactivated again. The at least one force-generating element 35 is preferred as at least a first displacement drive 35 educated. The at least one force-generating element 35 is preferred as at least one with respect to its volume variable hollow body 35 , For example, as at least one pneumatic force generating element 35 , in particular as at least one expansion hose 35 educated. This hollow body is preferred 35 subjected to compressed air or at least acted upon.

For example, at least one rotary inlet is preferably on at least one end face of the respective forme cylinder 07 , In particular arranged on one of its pins to the fluid, for. B. the air as a medium in the forme cylinder 07 and in particular in the hollow body 35 or stretch hose 35 and / or in the tension hose 28 to transport. The at least one rotary inlet is preferably multi-channel, ie, there are different support elements 28 and / or force generating elements 35 each preferably be acted upon by fluids of different pressures. The at least one rotary inlet is in particular also designed such that a fluid to be acted upon in the respective forme cylinder 07 arranged support element 28 and / or force generating element 35 each during a rotation of this forme cylinder 07 is acted upon by the fluid or at least acted upon. In a particularly preferred embodiment of the at least one rotary inlet, its several channels are during the rotation of the forme cylinder 07 each acted upon by fluids of different pressures or at least acted upon.

It is preferred for displacing the at least one tensioning element 20 in the axial direction A of the forme cylinder 07 an internal pressure of the preferred as a stretch hose 35 trained hollow body 35 can be raised, in particular selectively increased. For this purpose, at least one valve, in particular a proportional valve and / or at least one pressure reducer is preferably provided, by means of which an internal pressure can be selectively adjusted. Alternatively or additionally, for example, it is provided that the preferred as a stretch hose 35 trained hollow body 35 gradually with partial volume of the fluid provided for filling, in particular air, is filled. The partial volumes are preferably predetermined by a specification with respect to the volume and / or a specification with respect to an opening time of a valve or the like. For example, such a stepwise filling is carried out iteratively with repeated detection of the internal pressure and / or the position of the at least one tensioning element 20 relative to the bale 46 of the forme cylinder 07 and / or repeated image inspection and / or repeated register measurement until a desired value and / or state is reached. The partial volumes are preferably preferred as the expansion tube 35 trained hollow body 35 fed to one at the inner of this hollow body 35 adjoining valve bears a pressure which is at least as high as and preferably higher than that for the interior of the hollow body 35 provided internal pressure, and that by targeted opening of this valve fluid into the interior of the cavity 35 flows. In an alternative embodiment, this is for displacing the at least one tensioning element 20 in the axial direction A of the forme cylinder 07 provided adjusting means designed as a preferably electrically operated motor.

For example, this is at least one force-generating element 35 arranged such that a force generated by it 39 is initially aligned at least substantially orthogonal to the axial direction A. Then at least one force transmission element is preferred 36 arranged, for example, as at least one lever or preferably at least a first spiral spring 36 is trained. Preferably, the at least one bending spring 36 preformed such that a convex portion of the spiral spring 36 the at least one force generating element 35 facing and with respect to the axial direction A at a same position as the at least one force generating element 35 is arranged. Preferably, therefore, the at least one bending spring is preferred 36 arranged in their longitudinal extent in the axial direction A. This is preferably at least one force transmission element 36 at least at a first connection point 37 with the bale 46 of the forme cylinder 08 connected and / or in contact. The first connection point 37 becomes, for example, cylindrical bearings 37 called. This is preferably at least one force transmission element 36 at least at a second connection point 38 with the at least one tensioning element 20 connected and / or in contact. The second connection point 38 For example, also clamping element bearing 38 called. Preferably allow the first junction 37 and / or the second connection point 38 relative movements between the at least one power transmission element 36 on the one hand and the bale on the other 46 of the forme cylinder 07 and / or the respective clamping element 20 on the other hand, with respect to the circumferential direction B. This is done, for example, by arranging at least one dovetail guide 45 allows, for example, a connection between the bale 46 of the forme cylinder 07 and the tensioning element 20 manufactures.

Preferred is by one of the force generating element 35 outgoing power 39 a shape and / or position of the at least one force transmission element 36 so changeable that the second connection point 37 with respect to the axial direction A from the first joint 37 Will get removed. For example, that of the force generating element 35 outgoing power 39 by an increased pressure within the expansion tube 35 generated. For example, to change the shape and / or position of the at least one force transmission element 36 reduces its convexity and / or increases its extent in the axial direction A. For example, the spiral spring 36 as a force transmission element 36 over the expansion tube 35 with a force 39 acted upon, which acts essentially transversely to the longitudinal extent of the spiral spring and preferably in the middle of the spiral spring 36 attacks. This leads to a deformation of the spiral spring 36 , so that there is a distance a between the cylinder bearing 37 and the tensioner bearing 38 increases and thus the clamping element 20 is shifted with respect to the axial direction A.

This is preferably at least one force transmission element 36 formed so elastically that it generates a counteracting its counterforce counteracting force, which is further preferred less than that by the force generating element 35 producible force 39 , As a result, for example, when relieving the bending spring 36 by venting the expansion hose 35 the spiral spring 36 to return to their original position. Is the tensioning element bearing 38 as a loose second junction 38 executed, it is preferred at least one restoring element generating a restoring force 40 arranged, for example in the form of a compression spring 40 , This allows the respective clamping element 20 be moved back to its initial position with respect to the axial direction A. Alternatively or in addition to the return element 40 is for example a positive connection between the bale 46 on the one hand and the power transmission element 36 on the other hand, at the second connection point 38 and between the clamping element 20 on the one hand and the power transmission element 36 on the other hand, at the first junction 37 provided to the respective clamping element 20 again to spend in its relative to the axial direction A starting position, in particular by the counterforce by the force transmission element 36 itself is effected.

Alternatively or in addition to the expansion tube 35 can also be at least one pneumatic cylinder and / or at least one hydraulic cylinder and / or at least one electric drive as a force generating element 35 be used, for example in conjunction with at least one gear, such as a threaded spindle. The at least one force transmission element 36 is alternatively or additionally designed as at least one toggle mechanism. The force then preferably acts 39 the force generating element 35 on a joint between two levers, so that the extension of the toggle mechanism, the displacement of the respective clamping element 20 he follows.

A second example of the second embodiment of the at least one displacement means 34 differs from the first example in particular by a type and / or direction of the force transmission element 36 applied force. While in the first example, the clamping element 20 upon activation of the force generating element 35 through the power transmission element 36 is pushed in the second example as a clamping element 20 upon activation of the force generating element 35 through the power transmission element 36 drawn. Unless otherwise stated, the second example is preferably the same as the first example. Preferably, the at least one bending spring 36 preformed such that a concave portion of the spiral spring 36 the at least one force generating element 35 facing and with respect to the axial direction A at a same position as the at least one force generating element 35 is arranged.

It is then preferred by one of the force generating element 35 outgoing force a shape and / or position of the at least one force transmission element 36 so changeable that the second connection point 37 with respect to the axial direction A to the first connection point 37 to be moved. For example, that of the force generating element 35 outgoing power 39 by an increased pressure within the expansion tube 35 generated. For example, to change the shape and / or position of the at least one force transmission element 36 increases its concavity and / or reduces its expansion in the axial direction A. For example, the spiral spring 36 as a force transmission element 36 over the expansion tube 35 with a force 39 acted upon, which is substantially transverse to the longitudinal extent of the spiral spring 36 works and preferably in the middle of the spiral spring 36 attacks. This leads to a deformation of the spiral spring 36 , so that there is a distance b between the cylinder bearing 37 and the tensioner bearing 38 reduces and thus the relevant clamping element 20 is shifted with respect to the axial direction A. If a reset element 40 is arranged, this is preferred as at least one tension spring 40 educated.

Alternatively, a force transmission element 36 not arranged, but a force generating element 35 is directly with the respective at least one tensioning element 20 in contact and is to designed to set its relative to the axial direction A position directly.

The one on the forme cylinder 07 clamped cylinder lift 08 is preferably changed according to predetermined values and preferably in the remote direction in the axial direction A and / or in the circumferential direction B in its dimension, in particular stretched.

To stretch the cylinder lift 08 in the circumferential direction B, the cylinder lift 08 preferably on the forme cylinder 07 arranged and more preferably at its leading in the printing operation end 17 in or on the front attachment means 16 attached, in particular clamped, and at its trailing end in printing operation 19 in the at least one in the cylinder channel 14 arranged clamping element 20 the tensioning device 15 held. In particular, by movement of the at least one clamping element 20 with respect to the circumferential direction B is within the cylinder elevator 08 a tensile FZ constructed to stretch the cylinder lift 08 is increased in the circumferential direction B. By shifting the clamping elements 20 in the circumferential direction B, the cylinder lift 08 on the surface of the forme cylinder 07 strained and, if necessary, stretched.

The at least one in the span 14 movably arranged clamping element 20 preferably each has at least one outer clamping element 23 and at least one inner clamping element 24 on, with the clamping element 20 at least one of which is an inner clamping element 24 , in its movement in the circumferential direction B of the forme cylinder 07 by at least one in particular with the bale 46 this form cylinder 07 firmly connected, in the circumferential direction B of the forme cylinder 07 extending guide rail 48 z. B. is positively guided along a travel S, which at least one guide rail 48 preferably on or in the ground 49 of the chip channel 14 or at low altitude above the ground 49 of the chip channel 14 is arranged ( 7 and 8th ). Below a low altitude above the ground 49 of the chip channel 14 should be understood a height, starting from the level of reason 49 of the chip channel 14 maximum up to half the height of the relevant in the clamping channel 14 arranged clamping element 20 , ie in particular its inner clamping element 24 , preferably only up to a third of this height measures. In a preferred embodiment, the guide rail 48 formed as a tongue and groove system, one in the circumferential direction B of the forme cylinder 07 extending z. B. T-shaped groove on the reason 49 of the chip channel 14 facing end of the chuck 14 arranged inner clamping element 24 and one in this groove in particular with only a small amount of less than z. B. 0.3 mm guided z. B. T-shaped spring at the bottom 49 of the chip channel 14 are trained, as it is in the 8th is shown by way of example. The in the circumferential direction B of the forme cylinder 07 moving clamping element 20 is of that of the variable in volume hollow body 28 z. B. by means of a preferably directly to the relevant clamping element 20 acting piston 53 preferably against the force FF at least one in the clamping channel 14 in or on a holder 52 firmly supported spring element 51 driven. The at least one spring element 51 is preferably each formed as a compression spring. With a reduction or elimination of the pneumatic agent 28 , ie in particular of the hollow body 28 on this clamping element 20 exerted pressure remains the tension element 20 at his z. B. along the travel S set position, in particular due to the inside of the cylinder elevator 08 built on the relevant clamping element 20 applied pressure counteracting tensile stress FZ in a state of self-locking.

FZ

Gegenkraft bzw. Zugspannung des Zylinderaufzugs 08

FF

Gegenkraft des Federelementes 51

FH

Druck bzw. Antriebskraft des Hohlkörpers 28

FA; FB

Führungskräfte entlang der Führungsschiene 48

FAr; FBr

Reibkräfte entlang der Führungsschiene 48

The emergence of self-locking is based on the 9a and 9b explained in more detail, in each case only one of z. B. in the at least one guide rail 48 preferably along a travel S in the circumferential direction B of the forme cylinder 07 guided clamping elements 20 in the preferred embodiment with its at least one outer clamping element 23 and its at least one inner clamping element 24 is shown in a partial section. The following forces and corresponding stresses and / or pressures act on the respective representation:

FZ

Counterforce or tension of the cylinder lift 08

FF

Counterforce of the spring element 51

FH

Pressure or driving force of the hollow body 28

FA; FB

Executives along the guide rail 48

FAr; SBrk

Frictional forces along the guide rail 48

3a shows the state of tensioning a preferably on a forme cylinder 07 arranged cylinder lift 08 , Due to the geometric conditions outweighs the resulting force in the environment of z. B. T-shaped guide rail 48 opposite the counterforce FZ of the cylinder elevator 08 , The cylinder lift 08 is along the z. B. by the at least one guide rail 48 set travel S moves in the direction of the indicated movement arrow and thus tense.

3b shows the state of self-locking, ie a retention of the relevant clamping element 20 at a z. B. along the Travel S located position. When the driving force FH of the hollow body 28 and thus the resulting force against the counterforce FZ of the cylinder elevator 08 is lower and at least by the z. B. along the at least one guide rail 48 acting executives FA; FB as well as friction forces FAr; FBr certain threshold falls below or completely eliminated, the relevant is preferably performed with only a small clearance tensioning element 20 , ie its at least one inner clamping element 24 z. B. in or on the at least one guide rail 48 at the previously z. B. set along the travel S position "jammed" because the counterforce FZ of the cylinder elevator 08 a rectified to this counterforce FZ torque on the clamping element 20 exerts, with its pivot point in the region of the guide rail 48 lies, causing the relevant clamping element 20 from his to the ground 49 of the chip channel 14 orthogonal arrangement in the direction of the counterforce FZ of the cylinder elevator 08 "Tilts" and thereby at the at least one guide rail 48 fixed by tilting self-locking or held at the previously set position.

10 shows again in a partial sectional view of the relevant forme cylinder 07 one of the in or at the at least one guide rail 48 Self-locking clamping elements arranged 20 ,

To stretch the cylinder lift 08 , in particular at least the trailing end 19 of the cylinder elevator 08 in the axial direction A is preferably carried out a relative displacement of at least two of the clamping elements 20 with respect to this axial direction A, in particular from the center of the bale related to the axial direction A. 46 of the forme cylinder 07 starting. By shifting the clamping elements 20 in the axial direction A becomes the cylinder lift 08 in the area of its trailing end 19 spread and thus stretched. A change in the tensile stress FZ in the respective cylinder lift 08 , in the axial direction A and / or in the circumferential direction B, leads in each case to a dimensional change of this cylinder elevator 08 ie a change in its length and / or width.

In the case of one in the cylinder channel 14 self-locking clamping element 20 Can the with this clamping element 20 in a cylinder lift 08 built tensile stress FZ only increased, but during the rotation of the relevant forme cylinder 07 not be reduced. An unintentionally set too high tensile stress FZ can during the rotation of the relevant forme cylinder 07 can not be undone, but only after a standstill of the relevant forme cylinder 07 and a release z. B. as the outer terminal block 23 formed outer clamping element 23 of the relevant clamping element 20 , Therefore, in a multiple printing units 01 ; 02 ; 03 having processing machine, in particular printing machine provided that an inflated tensile stress FZ in a cylinder elevator 08 a particular in the execution of the print job involved form cylinder 07 from one of these printing works 01 ; 02 ; 03 by tracking the respective tensile stress FZ in a cylinder lift 08 from at least one other of the particular involved in the execution of this print job form cylinder 07 from at least one of the other printing units 01 ; 02 ; 03 is compensated.

This can be a method for adjusting at least one cylinder elevator 08 to a substrate change in the circumferential direction B of a forme cylinder 07 perform at least two cylinder lifts 08 in a printing press on different cylinders 07 be arranged, in which in these cylinder lifts 08 in each case a tensile stress FZ in each case at least in the circumferential direction B of their each carrying the forme cylinder 07 is constructed, in which the respective tensile stress FZ each during the rotation of the respective forme cylinder 07 in particular by a in the circumferential direction B z. B. along a travel S made displacement of a clamping element 20 is constructed, in which the relevant clamping element 20 is displaced in each case by a particular of the respective tensile stress FZ opposing drive force FH, in which at least one of the clamping elements 20 is kept at a reduction of the driving force FH below a limit in its position, z. B. in the state of self-locking, in which a held by the one held in position, z. B. in self-locking enduring clamping element 20 elevated tensile stress FZ in a cylinder lift 08 on a particular in a processing of a particular print job involved form cylinder 07 by a tracking, ie in particular by increasing the respective tensile stress FZ in the respective cylinder lift 08 from at least one other form cylinder involved in particular in the processing of this print job 07 is compensated. This method can advantageously be carried out in combination with one or more of the other features already described or mentioned below.

In particular, by preferably in the processing machine, ie inline register measurements can be necessary settings and / or controls the clamping elements 20 and / or the drive of the forme cylinder 07 derive, in particular the necessary settings and / or controls the clamping elements 20 not only for tracking during the rotation of the relevant forme cylinder 07 but already when setting up preferably as Press machine trained processing machine to be made. Preferably, each cylinder lift 08 a print job in the course of its exposure provided with at least one image feature, for example in the form of a passport cross. The at least one image feature is usually in a print-image-free area of the cylinder elevator 08 arranged, but can for example also part of the printed image 32 be yourself.

For example, the cylinder elevator 08 with at least two in at least one in the axial direction and / or circumferential direction of the printing forme cylinder 07 provided extending image-free area image features. Preferably, at least two such image features are provided, which relate to their position on the forme cylinder 07 in the axial direction A and / or in the circumferential direction B differ from each other. For example, these are in at least one in the axial direction A and / or the circumferential direction B of the forme cylinder 07 extending pressure-free image area provided.

Preference is given in a memory, for example in which at least the relevant clamping element 20 controlling control computer of the processing machine for the clamped cylinder elevator 08 and / or specific data for the printing material to be printed in the upcoming printing job, such as its material and / or its thickness and / or its format deposited and / or it is for example a position in this or in another memory as machine-specific data or position of the respective clamping elements 20 deposited before processing the print job. In particular, in a control computer or a computer unit, a value limiting the maximum expansion and / or variation of the dimension in the circumferential direction and / or the axial direction is determined. It is advantageous before processing the pending print job for each of the printing units involved in the processing of the print job 01 ; 02 ; 03 in each case the at least one clamping element 20 each machine-specific data to be determined in each case and to deposit in the respective memory. With for every printing unit 01 ; 02 ; 03 individual machine-specific data, the z. As well as a ranking of these printing units 01 ; 02 ; 03 considered in their respective use in the processing of the relevant print job, especially in conjunction with specific data for the clamped cylinder elevator 08 and / or with specific data for the printing material to be printed in the upcoming printing each printing process dimensional changes to the substrate to be counteracted in an automatic control or regulation by taking into account these specific data from the control computer correction values are determined, for driving z. B. at least one of the clamping elements 20 and / or for adjusting and / or tracking an angular position of the relevant printing forme cylinder 07 relative to an angular position of a printing material-carrying cylinder 04 ; 06 be used. The control computer determines a deviation of z. B. the printing process and / or at least one dimension of the substrate concerned actual values to target values and then determines from this target / actual value comparison z. B. the position or position of the relevant clamping element 20 affecting correction values that reduces or eliminates this deviation. The control computer is preferably part of the machine control. Furthermore, process-specific data can be stored in the or another memory, wherein the process-specific data in particular a production speed of the processing machine and / or the climatic production conditions such. B. concern information about the temperature and / or humidity of the ambient air surrounding the substrate.

The for the opened cylinder lift 08 and / or the respective specific data to be printed in the upcoming print job substrate are preferably stored in their respective memory or in the shared memory depending on at least one variable process parameter or machine parameters, eg. B. depending on the production speed of the processing machine, in particular of a printing speed of the preferably designed as a sheet-fed printing press.

Dependent on a variable process parameter or machine parameter deposit of the respective computationally or experimentally determined specific data is z. B. each in a table or by a mathematically describable functional relationship, the respective functional relationship in a z. B. Cartesian coordinate system each z. B. is represented by value pairs or in a curve or is or is at least representable. Such a curve is also called a tracking curve.

• • der Produktionsgeschwindigkeit der Bearbeitungsmaschine
• • einer Einstellung eines Farbwerks 09 betreffend z. B. seiner Farbzonen, einer Duktordrehzahl oder einem Hebertakt
• • einer Einstellung eines Feuchtwerks 12
• • einer Information über die z. B. aktuelle oder beabsichtigte Flächendeckung des Bedruckstoffes
• • einer Höhe des betreffenden Zylinderaufzugs 08, d. h. einer Information zum Ist-Durchmesser von Oberflächen z. B. einer Druckplatte und/oder eines Gummituchs
• • einem Typen, insbesondere einem Gummituchtyp oder einem Förderverhalten des Gummituchs
• • einer Einstellung einer Pressung zwischen dem Bedruckstoff und dem mit dem betreffenden Formzylinder 07 zusammenwirkenden Übertragungszylinder 06, d. h. insbesondere dem Gummituch
• • einer Information betreffend den Bedruckstoff, z. B. seinem Typ oder Werkstoff, sein Flächengewicht, seine Faserausrichtung, seine Dicke, seine Länge und/oder Breite, die Beschaffenheit seiner zu bearbeitenden Oberfläche (z. B. gestrichen oder nicht gestrichen), sein Feuchtdehnungsverhalten
• • einer Information über die Temperatur und/oder Feuchte der den Bedruckstoff umgebenden Luft

Preferably, a quantity of specific data or different Nachführkurven are stored in the memory in question, which can be made of this amount in particular by the operator of the relevant preferably designed as a printing machine processing machine or automatically as needed a selection. The respective specific data or each of these Nachführkurven z. For example, depending on one or more of the following parameters:

• • the production speed of the processing machine
• • a setting of an inking unit 09 concerning z. B. its color zones, a duct speed or a lifter clock
• • a setting of a dampening unit 12
• • information about the z. B. current or intended area coverage of the substrate
• • a height of the relevant cylinder lift 08 , ie information about the actual diameter of surfaces z. B. a printing plate and / or a blanket
• A type, in particular a rubber type or a conveying behavior of the blanket
• • a setting of a pressure between the substrate and the cylinder concerned 07 cooperating transfer cylinder 06 ie in particular the blanket
• • information about the substrate, z. Its type or material, its basis weight, its fiber orientation, its thickness, its length and / or width, the nature of its surface to be treated (eg painted or not), its wet-stretching behavior
• • information about the temperature and / or humidity of the air surrounding the substrate

All of these specific data can be used individually or in any combination for the respective setting and / or tracking z. B. at least one of the clamping elements 20 and / or for setting an angular position of at least one of the cylinders involved in the printing process 04 ; 06 ; 07 be applied, ie each of these Nachführkurven can each alone or together with at least one of the other Nachführkurven for each setting and / or tracking z. B. at least one of the clamping elements 20 and / or for adjusting the angular position of at least one of the cylinders involved in the printing process 04 ; 06 ; 07 be applied. With the aid of the specific data, at least one printed image can be printed 31 as well as at least one cylinder lift 08 or both are each adapted to a substrate change.

In addition, it can be provided that the specific data used in each case as correction values by the operator of the relevant preferably designed as a printing machine processing machine in the respective clamping elements 20 be entered and / or tracking control computer. In this case, the correction values entered by the operator into the control computer can in each case be used alone or jointly, for example. B. in superposition, in particular in addition to at least one of the stored in the control computer Nachführkurven for each setting and / or tracking z. B. at least one of the clamping elements 20 and / or for setting an angular position of at least one of the cylinders involved in the printing process 04 ; 06 ; 07 come into use.

The for each setting and / or tracking at least one of the clamping elements 20 used specific data or correction values can also be learned by the control computer, preferably by several in the processing machine successively processed sheet, between each of which at least one parameter has been changed in the machine, each of a z. B. belonging to an inspection system detection device 60 be detected and compared with a reference, wherein the reference z. B. by another sheet 31 or is formed by a print template from a pre-press. Depending on in the aforementioned comparison z. B. using computational algorithms z. B. from the inspection system or the control computer preferably automatically determined deviations from the reference can, for. B. the control computer automatically determine correction values and in the memory in question for the above use in the respective setting and / or tracking z. B. at least one of the clamping elements 20 and / or for setting an angular position of at least one of the cylinders involved in the printing process 04 ; 06 ; 07 deposit.

Advantageously, thus, a method for adjusting a printed image can be 32 and / or at least one cylinder elevator 08 to perform a substrate change in a printing press, in which at least one cylinder lift 08 or the relevant cylinder lift 08 with at least one in a cylinder channel 14 a printing forme cylinder 07 the printing press arranged clamping element 20 on the lateral surface of the relevant printing forme cylinder 07 is tensioned, in which by means of a movement of the at least one clamping element 20 in the axial direction A and / or in the circumferential direction B of the plate cylinder 07 within the respective cylinder lift 08 in each case a tensile stress FZ is established. In this case, the adaptation to the substrate change, in particular during the rotation of the plate cylinder 07 in the circumferential direction B with a drive of the printing forme cylinder 07 by a controlled and / or controlled rotational movement of this printing forme cylinder 07 carried out. With the at least one tensioning element 20 In particular, when setting up the printing machine for a pending print job and / or during the executed during processing of the print job rotation of the plate cylinder 07 from a relevant clamping element 20 controlling Control computer within the cylinder lift 08 in each case set a specific value for the respective tensile stress FZ and / or tracked for adaptation to the change in substrate. Alternatively or additionally, a profile of an angular position of the relevant printing forme cylinder 07 relative to an angular position of a printing material-carrying cylinder 04 ; 06 controlled or regulated, wherein the specific value for the respective tensile stress FZ and / or the angular position of the respective plate cylinder 07 each based on stored in at least one memory specific data for the respective cylinder elevator 08 and / or for a printing material to be printed in the pending print job and / or using machine-specific data and / or using process-specific data and / or tracking. The adaptation of the print image 32 and / or the at least one cylinder elevator 08 to the substrate change is preferably carried out in each case based on stored in at least one memory specific data for the respective cylinder elevator 08 and / or for a printing material to be printed in the pending print job and / or using machine-specific data and / or process-specific data. The specific data for the opened cylinder lift 08 relate to each z. B. a height and / or a type of the relevant cylinder elevator 08 , The specific data for the printing material to be printed in the upcoming print job relate, for. B. information about its type or material and / or its basis weight and / or its fiber orientation and / or its thickness and / or its length and / or width and / or the nature of its surface to be machined or its Feuchtdehnungsverhalten. The machine-specific data relate z. B. a setting of an inking unit 09 the printing press and / or a setting of a dampening unit 12 the printing press and / or a setting of a pressure between the substrate and z. B. one with the forme cylinder 07 cooperating transfer cylinder 06 the printing press and / or a respective position of the at least one tensioning element 20 before processing the print job. The process-specific data relate z. Example, a production speed of the printing press and / or information about a coverage of the printing material and / or information about the temperature and / or humidity of the ambient air surrounding the substrate. The specific data for the opened cylinder lift 08 and / or the specific data for the printing material to be printed in the pending print job in the at least one memory are stored in the preferred embodiment depending on at least one variable process parameter or machine parameter, wherein the at least one variable process parameter z. Example, the production speed of the printing press and / or the information about the area coverage of the printing material and / or the information about the temperature and / or humidity of the printing material surrounding air and / or wherein the at least one variable machine parameters z. B. the setting of the inking unit 09 the printing press and / or the adjustment of the dampening unit 12 the printing press and / or the adjustment of the pressure between the substrate and the form cylinder 07 cooperating transfer cylinder 06 the printing press and / or the respective position of the at least one clamping element 20 before processing the print job. The storage of the specific data for the opened cylinder lift 08 and / or the specific data for the imprinted in the upcoming print job substrate and / or the machine-specific data and / or the process-specific data is carried in the at least one memory each in a table or by a mathematically describable functional relationship, the respective functional relationship is represented in a coordinate system in each case by value pairs or in a curve. The specific data for the opened cylinder lift 08 and / or the specific data for the printing material to be printed in the pending print job and / or the machine-specific data and / or the process-specific data are respectively determined by calculation or experiment. The specific data is z. B. by an operator of the printing press in the respective clamping elements 20 input and / or tracking control computer.

Even in the case of several persisting at their respective position, z. B. self-locking trained clamping elements 20 in various participating in the execution of the same print job form cylinder 07 the adjustment and / or tracking of the respective tensile stress FZ takes place in at least one of the cylinder elevators 08 preferably taking into account at least part of the specific data described above.

In an advantageous embodiment, it is provided that system-inherent correction values resulting from the machine-specific data and / or from the specific data for the mounted cylinder lift 08 and / or from the specific data for the printing material to be printed in the pending print job and / or from the process-specific data, to compensate for an expected change in substrate prior to processing the print job, ie especially when setting up the printing press for the upcoming print job, in particular during adjustment the respective clamping elements 20 be considered and then during the execution of this print job the previously made setting of the respective z. B. by the clamping elements 20 exerted Tensile stress FZ is tracked in particular based on at least one variable process parameter or machine parameter.

A procedure for generating correction values, in particular with a consideration of first correction values when setting up the printing press and tracking the setting made during the execution of this print job, will now be described by way of example with reference to FIG 11 explained. There are schematically the printing cylinder of a printing unit 01 ; 02 ; 03 shown. Such a printing unit 01 ; 02 ; 03 In the area of a so-called printing unit superstructure, one in an embodiment for the offset printing method comprises a transfer cylinder 06 , z. B. as a blanket cylinder, running first printing cylinder. This is another, as a form cylinder 07 assigned executed printing cylinder. Furthermore, the printing unit includes 01 ; 02 ; 03 in the area of a so-called printing unit substructure as a printing cylinder 04 trained printing cylinder and one as a transfer drum 05 designated transfer drum. In the exemplary embodiment are or are the transfer drum 05 , the printing cylinder 04 and the first printing cylinder via a driven by a main drive motor not shown here coherent gear train 55 driven.

The further printing cylinder is assigned a position-adjustable drive. This is usually designed as a direct drive DA, d. H. the drive motor is connected coaxially fixed to the drive shaft of the further printing unit cylinder and there is no positive connection with the drive of other cylinders and / or rollers.

This position-adjustable drive is trackable to the first printing cylinder. This is done so that actual position values LW1 of the first printing cylinder are compared with actual position values LW2 of the further printing cylinder. As a result, position differences are determined whose values serve as the basis for the actuation of the position-adjustable drive. This creates a press-specific error that must be compensated. This is done by determining values for a correction of the drive of the further printing unit cylinder from the position differences and a compensation curve not shown here. This means that the corrected value for the position-adjustable drive is determined. This is done in a control unit 56 ,

To the group of the above-mentioned press-specific errors include, for. B. caused by concentricity error of the first printing cylinder cylinder error. Printer-specific errors are also errors that z. B. by concentricity error of at least one provided for detecting the angle of rotation provided angular position encoder on the first printing cylinder. Furthermore, printing machine-specific errors occur when applying documents to the first printing cylinder. For example, such errors are inherent in the system.

These systematic, engine-specific errors are determined in the course of printing the press before it is delivered and / or in the course of setting up the press before a series of print jobs or before each print job and in the control unit 56 deposited. From these values, first angle-related correction values KW1 are generated, which are generated from the press-specific errors. These first correction values KW1 are now a subordinate overlay computer 57 in the form of first correction signals 58 transmitted and deposited there. The first correction values KW1 are now available for the control of the position-adjustable drive.

The means for determining the angle-related correction values further comprises a computing unit 59 for determining second angle-related correction values KW2. This arithmetic unit 59 Print job-specific errors are mediated as a basis for the calculation of the second correction values KW2.

For example, this register of print job-specific errors includes the register errors that occur as a result of the printing sheet being lengthened 31 arise. Through the loading of the printing sheet progressing from printing unit to printing unit 31 with color and moisture as it passes, it changes its dimension both in length and in width. The increase in length of the print sheet 31 can be compensated for example by the pressure length compensation already described. This is possible by targeted control of the position-adjustable drive. This is done by the other printing cylinder is cyclically changed with respect to the first printing cylinder in its peripheral speed. That is, the other printing unit cylinder is driven faster compared to the first printing cylinder within each revolution, whereby a minimum slip between the lateral surfaces of both cylinders is generated. This will do that on the sheet 31 applied print image 32 also printed longer and thus increasing from printing unit to printing unit or from color to color length change of the sheet 31 compensated. After each revolution, the rotational speed is again set to the rotational speed of the first printing cylinder.

The measured values as a basis for this Drucklängenkomposition can z. B. can be determined as follows:
Like from the 11 can be seen has the print image 32 of the print sheet 31 at least two measurement points formed here as pass marks 42 on, which have been applied in the course of the exposure of the printing plate. These are in a direction indicated by an arrow transport direction of the sheet 31 in each case at the beginning of printing and at the printing ends of the printed image 32 arranged. It is also possible to arrange an additional third registration mark between these two registration marks.

The current print length can be determined in different ways. Currently still widely used is the manual determination of the print length. This is done by printing test sheets as part of the preparation of a print job, or by taking test sheets during a printing process. A test sheet is evaluated by manually checking the position of the registration marks arranged at the beginning of printing for each color and correcting any register deviations that may be present by machine, ie by controlling the printing press. Subsequently, another test sheet is printed or removed. Now the distances to the rear registration marks assigned to the print end are measured and the values of the arithmetic unit 59 transmitted. There, the different values for each color are determined.

If there are third pass marks not shown here, intermediate values can be obtained by measuring these pass marks. These intermediate values allow a statement about the course of the printing length in the transport direction of the printed sheet 31 ,

This makes it possible to change the printing length more targeted, d. H. the pressure length change can be selectively changed locally. Prerequisite is the use of suitable facilities, such as so-called actuators.

Another way to determine the printing length is, for example, by a z. B. trained as a camera detection device 60 z. B. an inspection system register deviations in the printed image 32 and to determine the print length from these register deviations. This can be done manually on test sheets as well as inline in the press.

Both the manual measurement of the registration marks and the automatically determined values are now in the arithmetic unit 59 to disposal. This makes it possible to determine the second correction values KW2.

As a result of the calculation of the second correction values KW2 are second correction signals 61 to the following overlay calculator 57 transmitted.

In the overlay calculator 57 the first correction values KW1 are superposed with the second correction values KW2. There are control signals 62 generated, which a drive control 63 the further printing cylinder can be taught.

The superposition of a first correction value KW1 with a second correction value KW2 can be carried out sequentially. That means that for a first rotation angle range, for example, the position-adjustable drive is given a first correction value KW1, the control signal 62 generated and the position-adjustable drive provided. After processing, the second correction value KW2 is specified for the following second rotation angle range, the control signal 62 generated and the position-adjustable drive provided. Subsequently, the first correction value KW1 is again predefined for the following third rotation angle range. This sequence continues until the circulation is completed at 360 °.

In a further refinement, the superposition of the first correction values KW1 with the second correction values KW2 is carried out simultaneously. In this case, a first correction value KW1 with a second correction value KW2 in the overlay computer 57 calculated and a control signal per rotation angle range 62 provided for the control of the position-adjustable drive.

The control computer of the processing machine, in particular the printing press, z. B. the previously described functions of the control unit 56 and / or the overlay calculator 57 and / or the arithmetic unit 59 and / or possibly also the drive control 63 to unify.

If a print job is processed, then it is preferred for each printing unit 01 ; 02 ; 03 the actual position of the respective on the respective cylinder lift 08 recorded printed image feature, in particular passport cross. For example, an operator removes a substrate sheet after a proof print, measures the relative position of the image features and forwards these values to the control computer. Alternatively or additionally, this process is carried out by machine, in particular by means of corresponding sensors. For example, during the processing of the print job, the layers of the image features are recorded in fixed or at least definable intervals or continuously and transmitted to the control computer. In this way, even during the processing operation of the substrate, especially in a running printing process of the printing machine continuously one Adjustment of the position of the clamping elements 20 and / or a corresponding control and / or regulation of the rotational movement of the at least one forme cylinder involved in the printing process 07 be made.

By way of example, by means of the control computer, any deviations of the image features or register marks which may be present between one another and those of different printing units are preferably calculated 01 ; 02 ; 03 come. For example, including the preferred deposited, for each clamped cylinder lift 08 Specific data is preferably a required change in position of the corresponding clamping elements 20 of the respective printing unit 01 ; 02 ; 03 and / or a required corresponding control and / or regulation of the rotational movement of the forme cylinder 07 determined.

For example, one of the calculation algorithms not explained further here becomes one for a required change in position of the clamping elements 20 necessary driving force FH or a necessary pressure in the force-generating element 35 calculated and the force generating element 35 activated accordingly. Thus, the expansion tube is preferred 35 filled with a medium and in its interior for the change in position of the clamping element 20 required adequate pressure built up. For example, one of these or other computation algorithms for a required change in position of the clamping elements 20 necessary pressure in the support element 28 calculated and the support element 28 activated accordingly. Thus, the support tube is preferred 28 filled with a medium and in its interior for the change in position of the clamping element 20 required adequate pressure built up. For example, one of these or other computation algorithms for a required change in position of the clamping elements 20 necessary travel S or a location or a position of the at least one support element 25 calculated and the support element 25 adjusted accordingly. Thus, the at least one clamping spindle is preferred 25 shifted accordingly. In the case of non-existent support element 25 the relevant is at the at least one guide rail 48 positively driven clamping element 20 moved to a corresponding position along the travel S and adjusted or fixed there by self-locking. By means of these or other calculation algorithms, for example, a corresponding control and / or regulation of the rotational movement of the forme cylinder is required 07 necessary course of the angular position of the forme cylinder 07 relative to an angular position of a substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 calculated and a rotation of the forme cylinder 07 adapted and / or executed accordingly. By a sensor, such as a camera, is preferably a resulting change in position of the clamping elements 20 and / or stretching the cylinder elevator 08 and / or a displacement of an image feature and / or a register of the printed image measured and transmitted to the control computer.

In particular, if the register measurement results in a deviation of a desired position of a marking serving as a register mark from an actual position of the marking serving as a register mark, a method for compensating register deviations and / or register deviations in the axial direction is preferably carried out A. The method preferably comprises at least one change in the position of at least one tensioning element 20 with respect to the axial direction A. One speaks in this case of a trapezoidal deviation, because such deviations are usually more pronounced on the basis of, for example, the gripper in the rear region of the arc than possibly in the front region of the arc. For example, a mark used as a register mark is a printed register mark when printing.

If it is determined during a register measurement that a trapezoidal deviation results, then the trailing end is preferred 19 of the cylinder elevator 08 subjected to an increased voltage with respect to the axial direction A and thus stretched in the axial direction A. For this purpose, preferably one or more of the clamping elements 20 or clamping segments 20 displaced with respect to the axial direction A. The displacement of the clamping elements 20 with respect to the axial direction A for stretching the cylinder elevator 08 Preferably takes place from the inside to the outside, that is, starting from the center of the cylinder channel related to the axial direction A. 14 to a related to the axial direction A edge of the cylinder channel 14 , With a symmetrical trapezoidal deviation, the displacement of the clamping elements takes place 20 preferably symmetrical about an axial direction of the center of the bale of the forme cylinder 07 , In an asymmetrical trapezoidal deviation, the displacement of the clamping elements takes place 20 preferably also asymmetrical with respect to the axial direction A related center of the bale 46 of the forme cylinder 07 , In particular, then, for example, more clamping elements 20 the axial direction A are displaced as displaced against this axial direction A and / or are exclusively clamping elements 20 displaced in or against the axial direction A. Also, a different only from the amount of the distance traveled ago relocation comes into question. Preferably, this displacement of the clamping elements 20 by means of at least one displacement means 27 ; 34 ,

The displacement of the clamping elements 20 and thus a stretching and / or relaxing the cylinder elevator 08 with respect to the axial direction A and / or in the circumferential direction B is preferably carried out during each rotation of the respective cylinder elevator 08 carrying forme cylinder 07 , During this rotation of the forme cylinder 07 becomes the cylinder lift 08 preferably brought into contact with a surface, for example a surface of another body of revolution. As such a rotational body is in particular the blanket cylinder 06 and / or one or more inking rollers 10 and / or one or more dampening rollers 13 for use. First, the respective at least one tensioning element is preferred 20 changed with respect to its relative to the axial direction A position and then the trailing end in printing operation 19 of the cylinder elevator 08 rolled over by the corresponding body of revolution. Alternatively or additionally, the respective at least one clamping element 20 with respect to its relative to the axial direction A position changed while the trailing end in printing operation 19 of the cylinder elevator 08 rolled over by the corresponding body of revolution. For example, there is a change in the relative to the axial direction A position of the respective clamping element 20 in several successive sub-operations. This results in a more precise and gentler tension of the cylinder lift 08 allows. In particular, then the roll over can also take place during the sub-operations and / or after the sub-operations.

After the construction of the required adequate pressure and / or the achievement of the desired position of the clamping elements 20 is the on the clamping elements 20 acting force and, for example, the pressure inside the corresponding hollow body 35 lowered to a value in the static friction region between a surface of the forme cylinder 07 and a bottom of the cylinder elevator 08 lies. This reduction ensures that, while maintaining the position of the clamping elements 20 the on the cylinder lift 08 acting force is kept relatively small. In this way, a flow and thus a creeping and in particular unwanted further stretching of the material of the cylinder elevator 08 counteracted.

Preferably, the displacement of the clamping elements done 20 and thus in particular the stretching and / or relaxing of the cylinder elevator 08 in the axial direction A preferably independent of the tensile stress FZ in the circumferential direction B and further preferably under unchanged maintenance of the tensile stress FZ in the circumferential direction B and without a previous cancellation of a tensile stress FZ in the circumferential direction B. Preferably, the tensile stress FZ in the circumferential direction B is maintained unchanged during this , This tensile stress FZ preferably corresponds at most to that reduced tensile stress FZ, below which the cylinder lift 08 permanently on the form cylinder 07 is stretched. But it is also possible to reduce this only temporarily.

In particular, if there is a deviation of a desired position of a marking serving as a register mark to an actual position of the register mark serving as a register mark in the register measurement on the circumferential direction B, z. B. the following method for compensating register deviations and / or register deviations performed in the circumferential direction B.

In a first embodiment of the method for compensating register deviations and / or register deviations in the circumferential direction B, it is preferable to change the dimension of the cylinder elevator 08 in the circumferential direction B, in particular by a change in the position of at least one clamping element 20 with respect to the circumferential direction B. Preferably, this change in position with respect to the circumferential direction B for several and more preferably for all clamping elements 20 ,

For this purpose, for example, a pressure in the hollow body as variable with respect to its volume 28 trained support element 28 increased, whereby the at least one clamping element 20 is moved in the circumferential direction B and the cylinder lift 08 accordingly stretched and thereby stretched. With a reduction of the pressure within the support element 28 there is a relaxation of the cylinder elevator 08 and after overcoming a stiction a shortening of the cylinder elevator 08 ,

Alternatively or additionally, z. B. at least one as a clamping spindle 25 trained support element 25 so activated, for example, turned that a displacement of the corresponding at least one clamping element 20 takes place and thereby an elongation of the cylinder elevator 08 is reached.

The displacement of the clamping elements 20 and thus in particular a stretching and / or relaxing of the cylinder elevator 08 with respect to the circumferential direction B is - as mentioned - preferably during a rotation of the respective cylinder elevator 08 carrying forme cylinder 07 , During this rotation of the forme cylinder 07 becomes the cylinder lift 08 brought into contact with a surface, for example a surface of another body of revolution. As such a rotational body is in particular the blanket cylinder 06 and / or one or more inking rollers 10 and / or one or more dampening rollers 13 for use. Preferably, the respective at least first preferred a tensioning element 20 changed with respect to its related to the circumferential direction B position and then the trailing end in printing operation 19 of the cylinder elevator 08 rolled over by the corresponding body of revolution. Alternatively or additionally, the respective at least one clamping element 20 with respect to its related to the circumferential direction B position changed while the trailing end in printing operation 19 of the cylinder elevator 08 rolled over by the corresponding body of revolution. For example, there is a change in the relative to the circumferential direction B position of the respective clamping element 20 in several successive sub-operations. This results in a more precise and gentler tension of the cylinder lift 08 allows. In particular, then the roll over can also take place during the sub-operations and / or after the sub-operations.

After the construction of the required adequate pressure and / or the achievement of the desired position of the clamping elements 20 is the on the clamping elements 20 acting force and, for example, the pressure inside the corresponding hollow body 28 lowered to a value in the static friction region between a surface of the forme cylinder 07 and a bottom of the cylinder elevator 08 lies. This reduction ensures that, while maintaining the position of the clamping elements 20 the on the cylinder lift 08 acting force is kept relatively small. In this way, a flow and thus a creeping and in particular unwanted further stretching of the material of the cylinder elevator 08 counteracted. The same applies analogously for the at least one as a clamping spindle 25 trained support element 25 ,

A change in the dimension of the substrate in the circumferential direction B becomes an alternative or in addition to a change in the dimension of the at least one cylinder elevator 08 in the circumferential direction B preferably by a correspondingly controlled and / or controlled rotational movement of the forme cylinder 07 compensated.

Accordingly, or alternatively or in addition to the above-described change in the dimensions of the cylinder elevator 08 in particular with the help of the drive of the forme cylinder 08 a length compensation performed or is at least so feasible. The drive of the forme cylinder 07 In particular, this is preferably designed as a single drive, more preferably as a direct drive DA.

A ratio between a first angular velocity of the forme cylinder 07 and a second angular velocity of the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 Speed ratio is called, in particular speed ratio between form cylinder 07 and impression cylinder 04 , Preferably, the substrate is processed in such a way that, during the processing of the substrate, the speed ratio is selectively influenced and / or adjusted in such a way that it deviates from any integer ratio at least temporarily and preferably for the major part of the time of processing. Preferably, therefore, during the processing of the substrate, the speed ratio is not integer, at least temporarily, and preferably more than half the time. An integer ratio of two values is to be understood in particular as meaning a ratio of values corresponding to the value corresponding to the denominator of an integer in the mathematical sense when the value corresponding to the numerator is divided. Examples of integer ratios are therefore one to one, two to one, three to one, four to one, or the like. Processing of the substrate is preferably to be understood to mean a regular processing of the substrate, for example a printing process and / or a painting process and / or an embossing process and / or a punching process and / or a perforating process. A regular processing is preferably to be distinguished from a start-up phase of the operation and / or a termination phase of the operation and / or an interruption of the operation.

Processing of the substrate preferably takes place in such a way that this speed ratio is changed during the processing of the substrate, in particular therefore the ratio between the first angular velocity of the forme cylinder 07 and the second angular velocity of the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 , During this processing of the substrate, a relative acceleration, which is related to the angular speeds, preferably takes place between the forme cylinder 07 on the one hand and the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 on the other hand. Such an acceleration is preferably at least temporarily positive and / or at least temporarily negative. Particularly in the context of such an acceleration, a change in the speed ratio preferably takes place during this processing of the substrate, more preferably a periodic change in the speed ratio. A period, ie, in particular a smallest local and / or temporal interval, after which the periodic change repeats, is preferred after a respective full revolution or also after an integral fraction of a full revolution of the forme cylinder 07 reached. An integer fraction is a fraction that, when multiplied by an integer, becomes unity. However, it may also be provided that the angular velocity of a single cylinder, in particular of the forme cylinder 07 or the impression cylinder 04 within a respective, preferably constant revolution period, that is to say within a respective full revolution or even within a corresponding integral fraction of a full revolution of the forme cylinder 07 is variably set so that successive revolutions differ with respect to a respective course of the speed ratio to each other.

For example, the form cylinder 07 during a full revolution through 360 ° over at least a first angular range of at least 180 ° and preferably at least 270 ° with at least a first peripheral speed of the forme cylinder 07 which is larger than a first peripheral speed of the transport body guiding the substrate 04 , especially cylinders 04 or impression cylinder 04 , Then this form cylinder is preferred 07 over at least a relatively small second angular range with at least a second peripheral speed of the forme cylinder 07 which is smaller than a second peripheral speed of the transport body guiding the substrate 04 , especially cylinders 04 or impression cylinder 04 , In this way, the cylinder elevator rushes 08 of the forme cylinder 07 the substrate during the determined by the at least a first angular range largest part of its revolution ahead, whereby, for example, the printed image 32 shortened is transferred to the substrate. Following is the form cylinder 07 rotates relatively slowly, so that the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 the form cylinder 07 catching up again. For example, a transfer cylinder rotates 06 but preferably not necessarily with a peripheral speed which substantially corresponds to a transport speed of the substrate.

The forme cylinder is preferred 07 during a full revolution through 360 ° over the at least first angular range of at least 180 ° and preferably at least 270 ° with at least a first peripheral speed of the forme cylinder 07 which is smaller than a first peripheral speed of the transport body guiding the substrate 04 , especially cylinders 04 or impression cylinder 04 , Then this form cylinder is preferred 07 over at least a relatively small second angular range with at least a second peripheral speed of the forme cylinder 07 which is larger than a second peripheral speed of the transport body guiding the substrate 04 , especially cylinders 04 or impression cylinder 04 , In this way, the substrate rushes the forme cylinder 07 during the largest part of the revolution of the forme cylinder defined by the at least one first angular range 07 ahead, whereby, for example, the printed image 32 lengthwise transferred to the substrate. Following is the form cylinder 07 rotates relatively quickly, so that he the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 catching up again. The example arranged transfer cylinder 06 Also in this case, it preferably but not necessarily rotates at a peripheral speed which substantially corresponds to the transport speed of the substrate.

Preferably, a change in the speed ratio takes place by an acceleration of the forme cylinder 07 , Alternatively or additionally, the substrate carrying the substrate can also be used 04 , especially cylinders 04 or impression cylinder 04 be accelerated. However, preference is given to all transport bodies which guide the substrate 04 , especially cylinders 04 or impression cylinder 04 with a common main drive and / or gear train 55 connected to the processing machine, while preferably each form cylinder 07 driven independently of it. The form cylinder 07 So preferably has a drive, regardless of the drive of the forme cylinder 07 contacting transfer cylinder 06 and / or the inking unit 09 and / or the drive of the forme cylinder 07 contacting impression cylinder 04 is. Thus, the individual acceleration of the forme cylinder 07 to prefer.

For example, the form cylinder 07 and / or the cylinder lift 08 of the forme cylinder 07 with the substrate or the transfer cylinder 06 in contact while the first form cylinder 07 an angular position within the at least one first angular range holds. For example, the form cylinder 07 and the cylinder lift of the forme cylinder 08 out of contact with the substrate and the transfer cylinder 06 while the first form cylinder 07 an angular position within the at least one second angular range holds, in particular because of the forme cylinder 07 Oriented so that the cylinder channel 14 of the forme cylinder 07 in this at least a second angular range of the transfer cylinder 06 and / or the impression cylinder 04 and / or arranged opposite the substrate.

Processing of the substrate preferably takes place in such a way that, during the processing of the substrate, this speed ratio is changed at least twice, that is, for example, initially reduced and then increased again. Further preferably, a processing of the substrate takes place such that during the processing of the substrate, this speed ratio during each complete revolution of the forme cylinder 08 is changed at least twice, that is, for example, first reduced and then increased again. Further Adjustments to corresponding changed circumstances are possible. This is the case, for example, when the forme cylinder 07 in the circumferential direction B with several cylinder lifts 08 one behind the other.

Preferably, such a controlled and / or controlled rotational movement of the forme cylinder takes place 07 to compensate for changes in the substrate and / or the printed image 32 also in the case of at least one cylinder lift designed as a sleeve 08 ,

In other words, it is preferred during a complete revolution of the forme cylinder 07 to customize the outgoing print image 32 to the change in the dimension of the substrate and / or to compensate for the printing length by the drive of the forme cylinder 07 a difference angle between the forme cylinder 07 and the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 generated. The drive of the forme cylinder 07 is preferably controlled so that the difference angle between the forme cylinder 07 and the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 within a complete revolution of the forme cylinder 07 is brought from an initial value to a predetermined final value and brought back to the initial value. The control can also be done so that within a complete revolution of the forme cylinder 07 in several cycles the differential angle between the forme cylinder 07 and the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 is brought from an initial value to at least a predetermined end value and returned to the initial value.

For example, an elongation of the cylinder lift takes place 08 in the axial direction A and elongation of the cylinder elevator 08 in the direction of rotation B at least temporarily simultaneously. For example, a compensation of the printing length by the drive of the forme cylinder takes place 07 parallel to and / or at least temporarily simultaneously with at least one elongation of the cylinder elevator 08 in the axial direction A and / or at least one elongation of the cylinder elevator 08 in the circumferential direction B. In another embodiment variant is within the cylinder to be adapted to a substrate change cylinder 08 first, the tensile stress FZ in the axial direction A and then the tensile stress FZ in the circumferential direction B of the respective forme cylinder 07 built up. The latter variant has the advantage that the required tensile stress FZ in the axial direction A is substantially lower than if previously the tensile stress FZ has been applied in the circumferential direction B. For the application of the tensile stress FZ in the circumferential direction B causes additional frictional forces, which impede the application of the tensile stress FZ in the axial direction A. The latter variant thus leads to a higher accuracy when compensating for a change of substrate in a printing press.

In one embodiment, depending on the required adjustment, either an elongation of the cylinder elevator takes place optionally 08 in the circumferential direction B or a change in this speed ratio. As long as the necessary adjustment of the print image length in the circumferential direction B does not have a by a maximum elongation of the cylinder elevator 08 in the circumferential direction B achievable adjustment of the print image length, then takes place exclusively by means of the expansion in the circumferential direction B. For larger necessary adjustments in the circumferential direction B then takes place instead preferably only a change in this speed ratio. The decision is preferably made taking into account at least the preferably stored in the control computer, for the clamped cylinder elevator 08 specific data and / or at least one in particular for the clamped cylinder lift 08 specific limit. If the control value for moving the clamping elements 20 in the circumferential direction B exceeds this limit, instead, the drive of the forme cylinder 07 so controlled that within one revolution of the forme cylinder 07 a change in the speed ratio between the first angular velocity of the forme cylinder 07 and the second angular velocity of the substrate carrying the substrate 04 he follows.

In another embodiment, only one is effected by a maximum elongation of the cylinder elevator 08 in the circumferential direction B achievable adjustment of the print image length beyond necessary adjustment of the print image length in addition to this strain a corresponding change in this speed ratio. If the control value for moving the clamping elements 20 in the circumferential direction B exceeds this limit, in addition to an example, reaching to this limit shift of the clamping elements 20 the drive of the forme cylinder 07 so controlled that within one revolution of the forme cylinder 07 a change in the speed ratio between the first angular velocity of the forme cylinder 07 and the second angular velocity of the substrate carrying the substrate 04 , especially cylinders 04 or impression cylinder 04 he follows.

The stretching of the cylinder elevator 08 regardless of its direction both before and during the execution of a print job respectively. In this case, a print job is to be understood as the entirety of the activities required for printing. That is, stretching can occur both before and during a color run. It may also be before or during a cleaning of the forme cylinder 07 or the inking unit 09 respectively. The stretching can also take place before or during the processing, in particular printing, ie before or during the contact of the transfer cylinder 06 or the cylinder elevator 08 with the substrate. If the stretching is to take place before the printing, the printing is preferably preceded by a previous test print, on the basis of which the required setting values are manually or automatically, for. B. can be determined by means of register measurements.

If the stretching takes place before the printing, then it is preferable for a contact of the forme cylinder taking place during the stretching 07 and / or the cylinder elevator 08 with a corresponding rotary body such as the transfer cylinder 06 or the impression cylinder 04 the inking rollers 10 and / or the dampening roller 13 not with that as a printing plate 08 trained cylinder lift 08 put on, for example, so that the color profile in the inking unit 09 preserved.

If a sheet 31 from the first stack of sheets 31 comprising sheet feeder of the sheet-fed press by their printing units 01 ; 02 ; 03 to the second stack of sheets 31 carrying sheet delivery is transported to this sheetfed press as it is in the 1 i. V. m. the direction of rotation arrows of the impression cylinder 04 is indicated, learns this sheet 31 Due to various printing process conditioned effects a deformation in its geometry, ie in its geometric dimensions. Under a sheet 31 Here is a sheet of paper or cardboard understood with a minimum format of DIN A3. Smaller format sizes are commonly referred to as "sheets." For example, such a printed sheet 31 in the printing process due to a pressure in each of him traversed printing nip between two cooperating printing cylinders of the sheet-fed press, z. B. in the nip between a transfer cylinder 06 and one with this transfer cylinder 06 cooperating impression cylinder 04 elongated. The at least one in the printing process on the relevant sheet 31 applied printing ink and optionally used in the printing process dampening carry in the sheet concerned 31 Moisture, what with a paper or cardboard, ie consisting of fibers printed sheet 31 leads to an at least partial, related to an axial direction of the cooperating printing cylinder actuator width elongation and optionally also to an at least partial, along the transport direction extending elongation of the respective sheet.

If print pages of a type area on the front and back of the same sheet are to match exactly, these printed pages must be printed on the relevant sheet 31 be arranged in register. In addition, in a printing process with a plurality of printing inks or color separations, an exact, ie positionally accurate, uniform printing of the individual printing inks or color separations one above the other or side by side must be ensured, which is referred to as register. An error in the register and / or register resulting from the deformation of a print sheet affecting its geometry 31 results due to the aforementioned printing process related effects, can by a correct register-containing arrangement of one or more participating in the printing process printing forms 08 can not be compensated. Therefore, there is a need for a method of solving this problem for adapting at least one length to a plurality of printed sheets 31 in each case the same size to be formed by printing technology, this surface preferably being rectangular in each case. This area forms z. B. one on the relevant sheet 31 trained or at least trainees print image 32 ,

• a) Die jeweilige auf den betreffenden Druckbogen 31 jeweils gleich groß auszubildende Fläche wird jeweils während eines Transports dieser Druckbogen 31 durch die Bogendruckmaschine ausgebildet, wobei sich die anzupassende Länge oder eine der anzupassenden Längen der betreffenden drucktechnisch auszubildenden Fläche längs oder quer oder schiefwinklig zur Transportrichtung des betreffenden durch die Bogendruckmaschine transportierten Druckbogens 31 erstreckt.
• b) In einem an einer mit einer Recheneinheit verbundenen Anzeigeeinrichtung angezeigten Vorschaudatenbild von der auf den jeweiligen Druckbogen 31 jeweils drucktechnisch auszubildenden Fläche oder in einer an der mit der Recheneinheit verbundenen Anzeigeeinrichtung angezeigten fotografischen Abbildung der auf einem der Druckbogen 31 drucktechnisch ausgebildeten Fläche oder durch eine mittels einer mit der Recheneinheit verbundenen Bedieneinrichtung ausgeführte Eingabe in die Recheneinheit von mindestens einer Koordinate, die jeweils eine Position eines in der drucktechnisch auszubildenden oder ausgebildeten Fläche befindlichen Punktes kennzeichnet, wird jeweils mindestens ein Punkt ausgewählt.
• c) Eine jeweilige Position des mindestens einen ausgewählten Punktes wird in der Recheneinheit in einem auf die Bogendruckmaschine bezogenen Koordinatensystem jeweils als ein Bezugspunkt 41 für die Anpassung der mindestens einen Länge der drucktechnisch auszubildenden Fläche festgelegt.
• d) Von einer mit der Recheneinheit verbundenen Erfassungseinrichtung 60 wird von einem eine drucktechnisch ausgebildete Fläche aufweisenden Druckbogen 31 mindestens ein von dem jeweiligen gewählten Bezugspunkt 41 verschiedener, zu der drucktechnisch ausgebildeten Fläche von diesem Druckbogen 31 gehörender Punkt jeweils als ein Messpunkt 42 erfasst.
• e) In dem auf die Bogendruckmaschine bezogenen Koordinatensystem wird eine jeweilige Position des mindestens einen erfassten Messpunktes 42 ermittelt.
• f) Hinsichtlich des den betreffenden erfassten Messpunkt 42 aufweisenden Druckbogens wird von der Recheneinheit ein Ist-Abstand zwischen der jeweiligen Position des mindestens einen von dem betreffenden Druckbogen 31 erfassten Messpunktes 42 und der jeweiligen Position des mindestens einen ausgewählten Bezugspunktes 41 ermittelt.
• g) Der ermittelte Ist-Abstand wird von der Recheneinheit mit demjenigen Soll-Abstand verglichen, den die dem betreffenden erfassten Messpunkt 42 entsprechende Position in der der Festlegung der Position des Bezugspunktes 41 zugrunde liegenden Fläche von der Position des betreffenden Bezugspunktes 41 aufweist.
• h) Die Recheneinheit passt in Abhängigkeit von einer von ihr ermittelten Abweichung des Ist-Abstandes vom Soll-Abstand durch eine Ausgabe eines Steuersignals an eine die auf mindestens einem weiteren Druckbogen 31 die jeweilige Fläche drucktechnisch ausbildende Einrichtung jeweils mindestens eine Länge der auf dem jeweiligen mindestens einen weiteren Druckbogen 31 jeweils gleich groß drucktechnisch auszubildenden Fläche an.

Such a method may provide for carrying out the following method steps:

• a) The respective ones on the relevant sheet 31 in each case the same size trainees area is during each transport this sheet 31 formed by the sheet-fed printing machine, wherein the length to be adapted or one of the lengths to be adapted of the relevant surface to be formed by printing technology along or transversely or obliquely to the transport direction of the respective printed sheet transported by the sheet-fed printing press 31 extends.
• b) in a displayed on a connected to a computer display device preview image from the on the respective sheet 31 each surface to be formed by printing technology or a photographic image of the one on the printed sheet displayed on the display unit connected to the arithmetic unit 31 typographically formed surface or by an executed by means of an operating unit connected to the arithmetic unit input to the arithmetic unit of at least one coordinate, each of which is a position of a located in the printing technology trainee or trained area point, at least one point is selected.
• c) A respective position of the at least one selected point is in the arithmetic unit in a related to the sheet-fed press Coordinate system each as a reference point 41 set for the adaptation of the at least one length of the area to be formed by printing technology.
• d) from a detection unit connected to the arithmetic unit 60 is from a printing technically trained surface having printed sheet 31 at least one of the selected reference point 41 various, to the printing technology trained area of this sheet 31 belonging point in each case as a measuring point 42 detected.
• e) In the coordinate system related to the sheet-fed press, a respective position of the at least one detected measuring point 42 determined.
• f) With regard to the measuring point concerned 42 having printed sheet is from the arithmetic unit an actual distance between the respective position of the at least one of the respective sheet 31 detected measuring point 42 and the respective position of the at least one selected reference point 41 determined.
• g) The determined actual distance is compared by the arithmetic unit with that desired distance, which is the measuring point concerned 42 corresponding position in the determination of the position of the reference point 41 underlying surface from the position of the relevant reference point 41 having.
• h) The arithmetic unit adapts depending on a deviation of the actual distance from the desired distance determined by it from an output of a control signal to an address on at least one further printed sheet 31 the respective surface pressure-technical device each having at least one length of the respective at least one further printed sheet 31 in each case the same size to be used for printing.

In the aforementioned method, the respective position of the at least one reference point 41 excluded from the adaptation of at least one length of the area concerned. In a preferred embodiment of this method, the detection device connected to the control computer or to the arithmetic unit 60 several measuring points in the same recording process 42 recorded simultaneously. These measuring points 42 can on the sheet 31 basically be distributed arbitrarily, but it is advantageous, they each z. B. in an edge region of the relevant sheet 31 capture. In the case of several of the detection device 60 detected measuring points 42 the arithmetic unit determines one between two of these measuring points 42 spanned, from their common point of reference 41 outgoing angle as an actual angle and compares the determined actual angle with one for these two measuring points 42 in connection with the relevant reference point 41 provided target angle and fits in the case of an impermissible deviation between the actual angle and the target angle to the on at least one other sheet 31 the respective surface pressure-technically-forming device output control signal to minimize this deviation. In the case of several of the detection device 60 detected measuring points sets the arithmetic unit for at least one of these measuring points 42 preferably another reference point 41 fixed than for at least one other of these measuring points 42 , The definition of several reference points 41 for the same sheet 31 in case of more of the detector 60 with regard to the printed sheet concerned 31 detected measuring points 42 gives the possibility of deformations of a sheet 31 compensate locally. This possibility is particularly advantageous if on the relevant sheet 31 An order of at least one printing ink and / or an entry of dampening solution locally is very different and therefore with regard to this printing sheet 31 locally very different deformations occur that are not or at least not sufficiently compensated by only one and each of the same action initiated by the arithmetic unit.

A first initiated by the arithmetic unit action consists for. B. in that in a plurality of printing units 01 ; 02 ; 03 having sheet-fed printing machine a drive, in particular a direct drive DA of a first plate cylinder 07 this sheet-fed printing machine relative to the respective drive, in particular the respective direct drive DA at least one other, ie second plate cylinder 07 this sheet-fed printing machine is controlled such that by a positive or negative acceleration of the at least one relevant plate cylinder 07 a due to the deformations of the sheet 31 set error compensating offset in the rotation angle between the first plate cylinder 07 and the at least one other, ie second plate cylinder 07 adjusting, this offset in the angle of rotation between the first plate cylinder 07 and the at least one other, ie second plate cylinder 07 z. B. only for one elbow, this elbow smaller than a full revolution of the plate cylinder in question 07 is. In this respect, the rotation of the relevant plate cylinder 07 one due to the deformations of the sheet 31 adjusted error compensating modulation imposed. A second action triggered by the arithmetic unit can, for. B. in a due to the deformations of the sheet 31 adjusted error compensating axial adjustment of at least one of the plate cylinder involved in the printing process 07 consist.

Another triggered by the arithmetic unit action consists z. B. in that on one of the plate cylinder 07 arranged printing form 08 in the circumferential direction B of this plate cylinder 07 and / or in its axial direction A, in particular by means of a displacement of the at least one tensioning element 20 is stretched or compressed. The deformations of the print sheet 31 form the printing technology trainee area z. B. trapezoidal or parallelogram-like or at least one edge with at least one buckle instead of rectangular.

In a very advantageous embodiment of the aforementioned method, the adaptation of the at least one length of the relevant surface is carried out as a function of at least one process parameter, wherein the process parameter is a distribution of a surface coverage with at least one printing ink on the relevant printed sheet 31 or the printing speed of the sheet-fed press or a torque of a main drive of the sheet-fed press or a torque of a direct drive DA of a plate cylinder 07 the sheet-fed press or a press in one of the sheets concerned 31 passed printing gap between two cooperating printing cylinders of the sheet-fed press or a dampening solution guide in a respective printing unit 01 ; 02 ; 03 the sheet-fed press or a coefficient of wet expansion of the material of the relevant sheet 31 or a moisture difference in the sheet concerned 31 between their stack in a sheet feeder and in a sheet delivery of the sheet-fed press concerns.

The adaptation of the relevant length of the relevant printing technology trainee surface and / or the adjustment of the actual angle to the desired angle is i. d. R. executed in an ongoing production of the sheet-fed press.

6 shows an example of a printed sheet 31 with it in the printing process z. B. rectangular shaped or at least trainee surface 32 , this area 32 z. B. a printed image 32 represents. Regarding this print sheet 31 applies to the sheet-fed press related Cartesian coordinate system whose origin 33 in one to the transport plane of the sheet 31 orthogonal, along the transport path of this sheet 31 extending plane is placed, said plane at the position of a half axial usable for the printing process length of a printing cylinder, for. B. a counter-pressure cylinder 04 or a forme cylinder 07 or a transfer cylinder 06 this sheet-fed printing machine is arranged. An advancing in the transport direction end of this sheet 31 is during its transport through the sheet-fed press with a fastener, for. B. with a clamping means on the lateral surface of the relevant impression cylinder 04 held. A trailing in the transport direction end of this sheet 31 is z. B. on the lateral surface of the relevant impression cylinder 04 loose. An abscissa X of the coordinate system extends z. B. in the axial direction A of the printing cylinder, z. B. the impression cylinder 04 or the forme cylinder 07 or the transfer cylinder 06 this sheet-fed printing machine, whereas the associated ordinate Y in the circumferential direction B of this printing cylinder, z. B. this impression cylinder 04 or this forme cylinder 07 or this transfer cylinder 06 runs.

To one due to a deformation of the sheet 31 to be able to determine required correction requirements, is in a computing unit with respect to the reference to the sheet-fed press coordinate system at least one reference point 41 established. This is done by one of the three method steps mentioned below, namely by the fact that either in a preview data displayed on a display device connected to the arithmetic unit from the on the respective sheet 31 each surface to be formed by printing technology 32 or in a photographic image displayed on the display device connected to the arithmetic unit, on one of the printed sheets 31 typographically formed surface 32 or by an executed by means of an operating unit connected to the operating unit input into the arithmetic unit of at least one coordinate, each having a position of a trained in the printing technology or trained area 32 indicates at least one point selected and the respective position of the respective selected point in each case as a reference point 41 for the adaptation of the at least one length of the printing technology trainee surface 32 is determined. The respective position of the at least one reference point 41 is assumed to be in need of correction and is therefore preferably adapted from the at least one length of the surface in question 32 except.

Then is from a connected to the arithmetic unit detection device 60 , z. B. with at least one camera from a printing technology trained area 32 having printed sheet 31 at least one of the selected reference point 41 various, to the printing technology trained area 32 from this sheet 31 belonging point in each case as a measuring point 42 detected. The arithmetic unit then determines, in the coordinate system related to the sheet-fed printing press, a respective position of the at least one detected measuring point 42 , If from the detector 60 over several sheets 31 each time the same measuring point 42 is detected, the arithmetic unit z. B. not only the position of this measuring point 42 on the respective sheet 31 but preferably also forms an average of the respective positions over a predetermined number of printed sheets 31 , where then this for the position of the relevant measuring point 42 formed average of a further evaluation, z. B. a distance calculation for the relevant reference point 41 is taken as a basis.

After both the respective position of at least one reference point in the arithmetic unit 41 fixed as well as the respective position of at least one detected measuring point 42 - Be determined directly or as an average - each with respect to the reference to the sheet-fed press coordinate system is calculated by the arithmetic unit with respect to the respective detected measuring point 42 having printed sheet 31 in particular an actual distance s1; s2 between the respective position of the at least one of the respective printed sheet 31 detected measuring point 42 and the respective position of the at least one selected reference point 41 determined. Subsequently, the determined actual distance s1; s2 is compared by the arithmetic unit with the nominal distance that the measuring point concerned detects 42 corresponding position in the determination of the position of the reference point 41 underlying area 32 from the position of the relevant reference point 42 having. The nominal distance is z. B. provided by the prepress or by a responsible for controlling the printing process production planning system. Thereafter, the arithmetic unit fits in dependence on a deviation of the actual distance s1 determined by it; s2 from the nominal distance by an output of a preferably electrical control signal to one on at least one further printed sheet 31 the respective area 32 printing technology forming device, ie at least one of the printing units 01 ; 02 ; 03 the sheet-fed press, in each case at least one length of the on the respective at least one further printed sheet 31 in each case the same size in terms of printing technology 32 at. In the case of several of the detection device 60 preferably in the same detection process simultaneously detected measuring points 42 the arithmetic unit preferably also determines one between two of these measuring points 42 spanned, from their common point of reference 41 outgoing angle φ as an actual angle and compares the determined actual angle with one for these two measuring points 42 in connection with the relevant reference point 41 provided, z. B. from the pre-press or from the responsible for the control of the printing process production planning system provided target angle. In the case of a deviation between the actual angle and the setpoint angle which goes beyond a previously defined tolerance limit and is therefore impermissible, the arithmetic unit then adapts that to at least one further printed sheet 31 the respective area 32 drucktechnisch forming device to output control signal to minimize this deviation. In this case, the adaptation of the relevant length of the concerned technically trainee surface 32 and / or the adjustment of the actual angle to the target angle usually performed in a current production of the sheet-fed press.

As described, a method of adjusting a cylinder elevator can be adopted 08 to perform a substrate change in printing machines, in which the printing machine at least two printing unit 01 ; 02 ; 03 has, every printing unit 01 ; 02 ; 03 a printing form cylinder 07 with at least one tensioning device 15 for tensioning a cylinder lift 08 and a printing material-carrying cylinder 04 includes, wherein the tensioning device 15 a tensioning device 18 or a clamping element 18 that is to adjust the cylinder lift 08 to the substrate change in the circumferential direction B of the plate cylinder 07 is shifted and / or in several clamping segments 20 or individual clamping elements 20 is divided, in the axial direction of the plate cylinder 07 in which adjusting the cylinder lift 08 takes place at the substrate change under contact with the surface of at least one rotating body. As a rotational body z. B. a rubber cylinder 06 , an inking roller 10 or a dampener 13 used. The cylinder lift 08 is during the contact with the rotary body in the circumferential direction B under a tensile stress FZ, said tensile stress FZ corresponds at most to the tensile stress FZ, below which the cylinder lift 08 on the printing plate cylinder 07 is stretched.

It is also a device for adjusting a printed image and / or a cylinder elevator 08 provided to a substrate change in printing machines, the printing machine at least two printing units 01 ; 02 ; 03 having, each printing unit 01 ; 02 ; 03 a printing form cylinder 07 and a printing material-carrying cylinder 04 includes and on the respective printing forme cylinders 07 at least one cylinder lift each 08 is spanned, such that the respective printing form cylinder 07 one cylinder channel each 14 with a clamping device associated therewith 15 such that the clamping device in question 15 at least one tensioning device 18 . 31 through which the respective cylinder lift 08 in the circumferential direction B and in the axial direction A of the respective printing forme cylinder 07 is changeable and the respective printing forme cylinder 07 having a drive for generating a differential angle between the respective plate cylinder 07 and the printing material-carrying cylinder 04 during the circulation of the respective printing forme cylinder 07 is formed, wherein the clamping members 18 . 31 are remotely adjustable. In this case, preferably at least one of the clamping members 18 . 31 in the circumferential direction B of the respective printing form cylinder 07 displaceable, wherein at least one of the clamping members 18 . 31 in clamping segments 20 is divided, with the clamping segments 20 starting from the middle of the relevant cylinder elevator 08 are each sideways displaced.

Alternatively or additionally, a device for adjusting a printed image and / or a cylinder elevator 08 provided to a substrate change in printing machines, the printing machine at least two printing units 01 ; 02 ; 03 having, each printing unit 01 ; 02 ; 03 a printing form cylinder 07 with at least one tensioning device 15 for tensioning a cylinder lift 08 and a printing material-carrying cylinder 04 includes, wherein the tensioning device 15 one in several clamping segments 20 divided clamping device 18 ; 31 has, the clamping segments 20 to change the dimension of the cylinder lift concerned 08 in the axial direction A of the respective printing forme cylinder 07 are displaced and the respective printing forme cylinder 07 having a drive for generating a differential angle between the respective plate cylinder 07 and the printing material-carrying cylinder 04 during the circulation of the relevant printing forme cylinder 07 is formed, wherein the clamping segments 20 at least one activatable force generating element 35 assigned. Here is the force generating element 35 z. B. as a hydraulic means or as a pneumatic means, for. B. as a hose, or as an electromechanical means, for. B. designed as an electric motor.

Furthermore, a device for adjusting a printed image and / or a cylinder lift 08 be provided to a substrate change in printing machines, the printing machine at least two printing units 01 ; 02 ; 03 has, every printing unit 01 ; 02 ; 03 each a printing form cylinder 07 with at least one tensioning device 15 for tensioning a cylinder lift 08 and a printing material-carrying cylinder 04 includes, wherein the tensioning device 15 a tensioning device 18 . 31 that is to adjust the cylinder lift 08 to the substrate change in the circumferential direction B of the respective plate cylinder 07 displaceable and in several clamping segments 20 is divided, in the axial direction A of the respective printing forme cylinder 07 are displaceable, wherein the clamping segments 20 at least one activatable force generating element 35 assigned. Here is the force generating element 35 z. B. as a hydraulic means or as a pneumatic means, for. B. as a hose, or as an electromechanical means, for. B. designed as an electric motor.

In particular, the at least two clamping elements 20 for adjusting and stretching the respective cylinder lift 08 to the substrate change in the circumferential direction by means of at least one pneumatic means 28 , for example by means of a hose 28 , and in the axial direction of the respective printing forme cylinder 07 by means of at least one further pneumatic means 35 , For example by means of a force generating element 35 , Relocatable relative to each other.

Each pneumatic means is preferably controlled and / or controlled in each case via its own controllable or controllable valve or via its own proportional valve.

Also, a device for adjusting a printed image and / or a cylinder lift 08 be provided to a substrate change in printing machines, the printing machine at least two printing units 01 ; 02 ; 03 having, each printing unit 01 ; 02 ; 03 each a printing form cylinder 07 with at least one tensioning device 15 for tensioning a cylinder lift 08 and a printing material-carrying cylinder 04 includes, wherein the tensioning device 15 at least one tensioning device 18 formed so that the cylinder lift 08 is remotely adjustable by this, such that the clamping member 18 in the circumferential direction of the relevant printing forme cylinder 07 is displaceable, wherein for displacing the tension member 18 in the circumferential direction a pneumatic means, for. B. a hose is provided.

Furthermore, with the above-described several, arranged in series printing units 01 ; 02 ; 03 and / or Lackwerke having processing machine, for. B. printing press, in particular sheet-fed printing press a method operable in which, while the sheet-fed printing machine executes a current print job, at least one printing unit 01 ; 02 ; 03 / Coating unit from the network of printing units that execute the current print job 01 ; 02 ; 03 / Lackwerke is spun off and on this printing unit 01 ; 02 ; 03 / Lackwerk a follow-up order is prepared, such that in a control computer both the order-related data of the directly on this printing unit 01 ; 02 ; 03 / Lackwerk previously executed print job as well as the on this printing unit 01 ; 02 ; 03 / Lackwerk following print job are provided that the divergence of the order-related data is determined, that on this basis the optimal sequence and the duration of the processing steps for the preparation of the follow-up order is calculated that the printing unit 01 ; 02 ; 03 / Lackwerk is prepared on the basis of the calculated values for the subsequent order and that subsequently this printing unit 01 ; 02 ; 03 / Coating unit is integrated to execute the follow-up order. It can by the Control calculator both the values for the zonal area coverage of this printing unit 01 ; 02 ; 03 / Lackwerk immediately before running print job as well as those of the subsequent order are provided, the divergence of this data is used as the basis for the calculation of the optimal sequence and the duration of the processing steps for the preparation of the follow-up order. To a sequence belong z. B. at least two of the processing steps clean printing, washing the inking rollers, changing the printing plates, loading a new color profile, inking the inking unit or coloring the printing plates. A time of the beginning of the preparation of the follow-up order is z. B. calculated so that the beginning of the preparation of the subsequent order is determined so that at the time of incorporation of the printing unit 01 ; 02 ; 03 / Lackwerks the preparation of the follow-up order is completed. The incorporation of the printing unit 01 ; 02 ; 03 / Lackwerks takes place z. B. immediately after the completion of the preparations, wherein z. B. immediately after reaching the optimum coloration of the inking unit, the printing plate is colored and the integration takes place. The incorporation into the current printing process is preferably done on the fly.

LIST OF REFERENCE NUMBERS

01

 printing unit

02

 printing unit

03

 printing unit

04

 Cylinder, impression cylinder, transport body

05

 Sheet transport device, transfer drum, transfer drum

06

 Cylinder, transfer cylinder, blanket cylinder

07

 Cylinder, forme cylinder, plate cylinder

08

 Cylinder lift, printing form, printing plate, varnish plate, varnish cloth

09

 inking

10

 Inking roller

11

 Inking roller

12

 dampening

13

 Dampener roller

14

 Cylinder recess, cylinder channel

15

 Fastening device, clamping device

16

 Fastening means, clamping means, front

17

End, leading ( 08 )

18

 Clamping element, clamping element, fastening means, clamping means, rear

19

End, trailing ( 08 )

20

 Clamping element, clamping segment

21

 Elevator storage, disc cartridge

22

23

 Clamping element, terminal strip, outer

24

 Clamping element, terminal strip, inner

25

 Support element, clamping spindle

26

27

 Displacement means, displacement spindle, hollow body, displacement hose

28

 Support element, hollow body, hose hose, hose

29

Duct wall ( 07 )

30

31

 sheet

32

 Print image; area

33

 Origin of a coordinate system

34

 displacement means

35

 Force generating element, force generator, displacement drive, first; Hollow body, expansion tube, pneumatic

36

 Power transmission element, force transmitter, spiral spring, first

37

 Junction, first; cylinder bearings

38

 Junction, second; Tensioner bearings

39

Force ( 35 )

40

 Return element, compression spring, tension spring

41

 reference point

42

 Measuring point; pass mark

43

44

45

 dovetail guide

46

Bales ( 07 )

47

Rotation axis ( 07 )

48

 guide rail

49

 reason

50

51

 spring element

52

 bracket

53

 piston

54

55

 gear train

56

 control unit

57

 Overlay computer

58

 first correction signal

59

 computer unit

60

 detector

61

 second correction signal

62

 actuating signal

63

 drive control

A

 Direction, transverse direction, axial

B

 Direction, circumferential direction

THERE

 direct drive

FZ

Counterforce or tension of the cylinder lift ( 08 )

FF

Counterforce of the spring element ( 51 )

FH

Pressure or driving force of the hollow body ( 28 )

FA; FB

Executives along the guide rail ( 48 )

FAr; SBrk

Frictional forces along the guide rail ( 48 )

KW1

 first angle-related correction values

CW2

 second angle-related correction values

LW1

 Actual position values of the first printing cylinder

LW2

 Actual position values of the further printing cylinder

S

 Travel Range

X

 Abscissa of the coordinate system

Y

 Ordinate of the coordinate system

a

 distance

b

 distance

s1; s2

 Actual distance

φ

 angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012207103 A1 [0004]
• DE 102012207111 B3 [0005]
• DE 102008023728 A1 [0006]
• DE 102007057455 A1 [0007]
• DE 4235393 A1 [0008]
• EP 1644192 B1 [0009]
• EP 0812683 A1 [0010]

Cited non-patent literature

• DIN 16500-2 [0002]

Claims (13)

Method for adapting at least one printed image and / or at least one cylinder elevator to a change of substrate in a printing press, in which at least one cylinder elevator ( 08 ) or the respective cylinder lift ( 08 ) with at least two in a cylinder channel ( 14 ) of a printing forme cylinder ( 07 ) of the printing press arranged clamping elements ( 20 ) on the lateral surface of the relevant printing forme cylinder ( 07 ) is tensioned, wherein by means of a movement of the at least two clamping elements ( 20 ) in the axial direction (A) and in the circumferential direction (B) of the respective printing forme cylinder ( 07 ) within the respective cylinder lift ( 08 ) in each case a tensile stress (FZ) is established and the dimension of the cylinder elevator ( 08 ), wherein the at least two clamping elements ( 20 ) for adjusting and stretching the respective cylinder elevator ( 08 ) to the substrate change in the circumferential direction (B) of the relevant printing forme cylinder ( 07 ) by means of at least one electric motor and the at least two clamping elements ( 20 ) in the axial direction (A) of the relevant printing forme cylinder ( 07 ) are displaced relative to each other by means of at least one other electric motor, wherein the at least two displaceable clamping elements ( 20 ) for adjusting the respective cylinder elevator ( 08 ) are remotely adjusted to the substrate change. A method according to claim 1, characterized in that the adaptation of the respective cylinder elevator ( 08 ) takes place at the substrate change under contact with the surface of at least one rotating body. A method according to claim 2, characterized in that as rotational body a transfer cylinder ( 06 ) or an inking roller ( 10 ) or a dampening roller ( 13 ) is used. Method according to at least one of the preceding claims, characterized in that the respective cylinder lift ( 08 ) is in the circumferential direction (B) under the tensile stress (FZ) during contact with the rotary body. Method according to at least one of the preceding claims, characterized in that the adaptation and expansion of the at least one cylinder elevator ( 08 ) to the printing stock change in each case on the basis of stored in at least one memory specific data for the respective cylinder elevator ( 08 ) and / or for a printing material to be printed in the pending print job and / or using machine-specific data and / or process-specific data. A method according to claim 1, characterized in that the detection of a print length in the course of preparing the printing on a proof sheet or during printing on a printed sheet ( 31 ) he follows. A method according to claim 1 or 6, characterized in that the printing length is detected by a printed image ( 32 ) associated pass marks ( 42 ). Method according to claim 1 or 7, characterized in that at least two registration marks ( 42 ), wherein at least one registration mark ( 42 ) at the beginning of printing and at least one registration mark ( 42 ) at the printing end of the printing sheet ( 31 ) is detected. Method according to at least one of claims 6 to 8, characterized in that the printing length is determined by a recording device ( 60 ) Register deviations in the printed image ( 32 ). Method according to at least one of the preceding claims, characterized in that the determination of the printing length is carried out inline in the printing press. Method according to at least one of the preceding claims, characterized in that by means of registration marks ( 42 ) and / or by the detection device ( 60 ) measured values the control computer or a computing unit ( 59 ). A method according to claim 1, characterized in that in the axial direction three clamping elements ( 20 ) are arranged, wherein for stretching the cylinder elevator ( 8th ) only the two outer clamping elements ( 20 ) are moved in the axial direction. A method according to claim 1, characterized in that in a control computer or a computer unit, a maximum elongation and / or change in the dimension in the circumferential direction and / or axial direction limiting value is set.

Images